Saturday, July 30, 2011

Now make your website load faster with Google



According to Ram Ramani, the lead engineer on the Google's Bangalore team that worked on the project, websites using Page Speed will see a speed improvement of 25% to 60%.
 
"To use the service, you (webmasters) need to sign up and point the site's DNS entry to Google," Ramani wrote in a post on Google's official blog. "Page Speed fetches content from your servers, rewrites your pages by applying web performance best practices, and serves them to end users via Google's servers across the globe. Your users will continue to access your site just as they did before, only with faster load times."

Though Google is offering the service free of charge to a select number of webmasters initially, it will charge a fee once it launches the service. According to Ramani, the Web giant is working to speed up site load times for the last two years and the latest project is another step towards enabling faster browsing. Google claims that the optimization will happen in the real time.

With the importance of the web growing, many companies are aiming to deliver better Web browsing experience. In recent years, all browser makers have put in a lot of efforts to speed up page rendering. Opera Mini, a browser for portable devices, uses its own servers to compress data before serving it on smartphones and tablets. Opera claims this optimization helps it offer a superior and faster Web browsing to experience to mobile users.

Companies like Amazon and Akamai, meanwhile, offer services like content delivery network (CDN) that can speed up data distribution. Many websites rely on these services. According to reports, Page Speed will make of both website optimization as well as a CDN.

10 biggest technology myths: Must Read

artical Picture Ah, the world of tech myths! Despite countless efforts to kill them, a host of myths continue to persist. Some of them are result of plain ignorance while a few had genuine lineage but as the technology moves forward, do not hold true anymore.
We take a look at 10 of these fallacies and squash them.
More mega pixels mean better picturesWe wish it could be true. Because then we all would have been pro photographers. More mega pixels were a big deal when digital cameras were new. But once the threshold of five mega pixels was reached, the number stopped being the most important factor in a camera.
In any modern camera, image quality primarily depends on sensor size and quality of lens. This is the reason why you are likely to get better images from say a Nikon D40, a 6 mega pixel camera, than a new point-and-shoot slick camera that can capture photos in 14 mega pixels.

Higher dynamic contrast ratio is betterMonitor and TV makers love to bandy about dynamic contrast ration. For example, Acer says its S231HL monitor has a dynamic contrast ratio of 12,000,000:1. In reality, this number doesn’t mean anything.
This contrast ratio can be achieved only when the monitor is displaying a completely black image. During normal use, the ratio is likely to be lot less than the static contrast ratio, which is 1000:1. Dynamic contrast ratio is a just a marketing scam so steer clear of that.
More RAM in a graphics card is betterThis is another marketing scam. And many gamers fall prey to it. In a graphics card, everything depends on the kind of processing chip that is used and not on amount of RAM. While buying a graphics card users need to pay close attention to the name. For example, AMD Radeon HD 6850 with just 1GB RAM will be more than four to five times faster than AMD Radeon 6450 with 2GB RAM.

Macs don't have virusesIt’s not really a myth. There is some truth to it. People using Apple’s MacBook, iMac or Mac Pro are less likely to face computer viruses. But this is not because Apple’s computers or operating software are virus-proof. The fact is that cyber criminals largely focus on Windows because that is used by majority of people. But as popularity of Apple’s computers increases, cyber criminals are taking note and new viruses and trojans on Mac have started appearing.
Right click+refresh makes PC fasterAround 15 years ago, computers were always running out of memory. RAM was very expensive and most computers had just 4MB to 8MB RAM. Then, there were poorly-coded applications that caused memory leaks. This led to the practice of right click+refresh on the desktop as by refreshing the display or in other words Explorer, in some cases users quickly reclaimed free RAM after closing a process.
On modern computers, which have ample RAM, doing a right click+refresh is nothing more than a foolish habit.
For graphics work, a Mac is bestThis one too was true sometime back. But now it’s more of a myth than a fact. Before 2006, Apple was using processors based on PowerPC architecture by IBM. Compared to Intel or AMD processors, PowerPC chips had an advantage in graphics-heavy work. But after 2006, Apple shifted to Intel processors. A Mac still has some advantage in font management as well as quality of bundled monitor. But if you are a graphic designer who knows your trade well and who takes care while choosing his gear, you don’t need to pay premium and buy a Mac just because someone told you that it is better for graphics work.

To delete a file permanently, delete it from Recycle BinAfter deleting a sensitive file from recycle bin, never think that you have obliterated it. Using recovery programmes, even a kid can retrieve the file back. When you delete a file from recycle bin, Windows just changes its file name and makes it invisible to user. The file does not get deleted unless it is overwritten, which happens over a period of time when you create new files.
CPUs with more cores/Ghz are betterAnother marketing lie. In any processor or computing chip, the underlying architecture is what matters. This is the reason why even slower AMD Athlon processors were considerably faster than Pentium 4. And the architecture is reason why nowadays a four-core Sandy Bridge processor from Intel is faster than six-core processors that AMD sells.
You need to buy expensive security softwareThis was true when no good security software were available for free. But situation has changed a lot in the last few years. Nowadays, if you want some cyber security on a home computer you don’t really need to spend any money.
Microsoft Security Essentials, which is a free dowanload, will do the job. And so will free anti-virus programs from AVG, Avast or Avira.
You need to stop a USB drive before taking it outThis is true but partially. If there is a file transfer going on, which means if you are moving files between pen drive and computer, you may need to stop USB drive before unplugging the pen drive.
But if there is no file transfer happening, you can pluck out the pen drive right away. We assure you that it won’t go up in flames.

Friday, July 29, 2011

Google+ And The Death Of Online Anonymity

Google+ wants its users to use their real names in making profiles in the social network. This has been the problem of Facebook in the past. Now the search giant has been suspending accounts on Google+ for various reasons but users are complaining that it is too strict in some cases but it’s not consistent with its policy.
People are now asking whether anonymity in the internet is already going away because of Google’s obsession with the users’ real name. In a recent crackdown in Google+, accounts suspended included some prominent members of the hacker community. These include a programmer named Skud and a popular iPhone developer only known by his alias MuscleNerd.
There are reports that certain accounts were restored even though they used obvious pseudonyms. Google said that it doesn’t really want to force people to use their legally given names and doesn’t mind people setting up profiles under commonly used names although the rules are too vague and open to different interpretations.
Google senior vice president Vic Gundotra said that the company wants to maintain a positive tone on the social network. He compared the policy as requiring people to wear shirts in a restaurant. But online identity is a lot complex than that.

Thursday, July 28, 2011

Apple laptops can be hacked to self-destruct; flaw to be detailed by hacker next month


How’s this for an undocumented feature? Apple’s newer MacBook, MacBook Air and MacBook Pro notebooks have a security flaw that can allow hackers to remotely prevent the batteries from charging. Better yet, hackers can exploit the same flaw and remotely cause batteries to explode. Apple laptops’ new “smart” battery technology is intended to provide added control over power management, and it does just that. Unfortunately, it also gives hackers added control because the microcontroller chip that ships in recent Apple laptops can be accessed remotely using a default password shared by each and every notebook. Charlie Miller, the security expert who discovered the vulnerability, plans to showcase the flaw next month at the Black Hat security conference. There, Miller will show that he is able to access the battery controller remotely and cause it to refuse a charge, or even heat up until it catches fire and explodes. “These batteries just aren’t designed with the idea that people will mess with them,” Miller told Forbes last week. “What I’m showing is that it’s possible to use them to do something really bad.” Thankfully, the security expert also intends to showcase a fix for the flaw, which Apple will hopefully implement as soon as possible.

Chrome vs IE9 vs Firefox: Browser War

Browser WarsThe Speed of the Web

Web browsers are converging. Since the arrival of Google Chrome nearly three years ago, all browsers have come under its influence, and they've all moved in the same three-pronged directions—speedier page loading, cleaner user interfaces, and greater support for new Web standards. All of the major browsers—Chrome, Firefox, Internet Explorer, Safari, and Opera—have made significant strides in each of these three dimensions. The first two qualities are pretty much universally desirable, but the "standards" support piece, while also desirable, gets sticky: Each browser seems to support a different subset of the many features that fall under the label HTML5. All you have to do is check out each browser's HTML5 demo site. Apple's HTML5 demos, for example, flat out won't function unless you're browsing with Safari. So much for "standards."

Along with new standard support, all browsers have posted massive improvements in page-rendering and script execution speed. You just have to look at the often-cited SunSpider JavaScript benchmarks to see this. Even Chrome, which I already described as "lightning fast" in December of 2008, has sped up on the test from a time of 881ms to 267ms in version 12 on my 2.6GHz dual-core laptop—that's less than a third of the time! The rest of the browsers have followed suit, clustering around the same level of performance. Mozilla and Google have built their own Javascript speed tests, Kraken and V8, respectively. When these first came out, the maker's own browsers widely outpaced competitors, but results on these tests are also evening out.

Browser Google V8 (v.6) Score
(higher is better)
Google Chrome 12 8205
Firefox 5 3459
Opera 11.50 3,454
Safari 5.1 2567
Internet Explorer 9 2360

Browser Mozilla Kraken 1.1 Score in ms
(lower is better)
Google Chrome 12 4841
Firefox 5 5707
Opera 11.50 12353
Internet Explorer 9 15050
Safari 5 17603

Browser SunSpider 0.9.1 Score in ms
(lower is better)
Internet Explorer 9 245
Google Chrome 12 267
Firefox 5 282
Opera 11.50 279
Safari 5.1 303
The next frontier in browser performance is about graphics hardware acceleration. In this area, Internet Explorer and Firefox are ahead of Google Chrome, Opera, and Safari. Microsoft was the first browser maker to make an issue of hardware acceleration in the buildup to its releasing IE9. The company's site for its browser, called IETestdrive.com, sports a slew of demonstrations that show off hardware acceleration, which you can try running in any browser. On these, you can clearly see IE and Firefox's lead in hardware acceleration.
On the FishIE demo, which uses Canvas and Javascript to display swimming tropical fish, Chrome delivered 40 frames per second with 20 fish and 5 FPS with 500 fish. Since both Firefox 4 and IE9 use hardware acceleration for more than just future 3D content, they score the maximum 60 FPS with 20 fish, but IE still beats Firefox with 500 fish. Chrome was, however, better than Opera, which only mustered 20FPS and 3FPS.

BrowserFishIE with 20 fish (FPS - higher is better) 500 Fish
Internet Explorer 9 6039
Firefox 4 6035
Google Chrome 12 404
Opera 11.50 203
Safari 5 203
Another IE9 demo, Psychedelic Browsing, spins a color wheel and plays spacy sounds, reporting RPM as a result. Surprisingly, Firefox beats Microsoft at its own game here by a tad, though it doesn't play the required sound. Chrome, however, plays the test's required sound, but fares far worse in the revolutions per minute result:
Browser Psychedelic Browsing
RPM (higher is better)
Firefox 4 1885 (no sound)
Internet Explorer 9 1799 (correct sound)
Google Chrome 12 131 (correct sound)
Opera 11 82 (no sound)
Safari 5 83 (no sound)
One final test of hardware acceleration comes from Mozilla, its Hardware Acceleration Stress test, which spins a spiral of photos in the browser window and reports a score in frames per second (which tops out at the LCD's maximum of 60FPS):
Browser Mozilla Hardware Acceleration Stress Test
FPS (higher is better)
Firefox 4 60
Internet Explorer 9 60
Google Chrome 12 17
Opera 11 17
Safari 5 3
On this test, again, the browsers with graphics hardware acceleration trounced those without. IE8 can't run the test since it lacks the requisite HTML5 support.

Saturday, July 23, 2011

Get Your Free Domain Name - Three Best Domain Name Providers

I’m going to share some of my favorite free URL redirection services that provide free short URLs which look exactly like a paid domain name. There are many services that can convert a long URL into a shorter one like Tinyurl, bit.ly, etc but they are limited for single links. Three services listed below give you free domain names (actually subdomains) which you can use for your websites or blog hosted on free service like blogspot.com!

#1 co.cc Domains

cocc94 1 3 Best Free Domain Registration Servicesco.cc is one of my favorite free domain service since it is lot more than a URL shortener. Domain name formats they provide is like www.yourdomain.co.cc. You can register upto 2 domains with a single account. You will get full control over domain management. They provide DNS and MX services too. So, you can either use the regular URL forwarding or frame forwarding (doesn’t show ur original link in address bar) or you can use these DNS services and add CNAMEs in your domain. CNAME control means you can use Google apps and so you can have your own email id like mail@yourdomain.co.cc rather than the usual yourname@gmail.com or yourname@yahoo.com.

#2 co.nr Domains

soof62 3 Best Free Domain Registration Servicesco.nr is not so special as co.cc but are in the market for long. They provide free domain name in the form www.yourdomain.co.nr and it can be used for either URL redirection for another domain or any long web URL. They also support meta tags and provide favicon support. The only problem with this service is that we need to provide a link back to their site from our homepage or where we redirect this URL or else the service will be deactivated momentarily.

#3 .tk Domains

dot tk 3 Best Free Domain Registration Services
DOT.TK domains are also used for url forwarding i.e to convert any web URL into the form www.yourdomain.tk . In addition to the normal URL forwarding they also provide mail forwarding where in we can choose upto 250 mail aliases to be forwarded to your mail account. For example, you can forward mail@yourdomain.tk or info@yourdomain.tk into your personal mail account. Earlier, they used to have a banner ad at the top of the window but now they have removed the ads completely which makes this service more attractive. The only problem now is all domain names that receive less than 25 hits per 90 days will be removed from your account.
There are a lot more free domain services but these are the only ones without any ads and they provide domains which are more or less similar to paid domains. I’Il write more on the other services in my next post. What are you waiting for?  Register your free domain now.

Cloud computing could lead to billions in energy savings

Another study out this week has found that if companies adopt cloud computing, they can reduce the energy consumption of their IT and save money on energy bills. The report, created by research firm Verdantix and sponsored by AT&T, estimates that cloud computing could enable companies to save $12.3 billion off their energy bills. That translates into carbon emission savings of 85.7 million metric tons per year by 2020.
The Verdantix report isn’t the first one to deliver such a finding. Last year Pike Research found that cloud computing could lead to a 38 percent reduction in worldwide data center energy use by 2020, compared to what the growth of data center energy consumption would be without cloud computing. Another study from Microsoft, Accenture and WSP Environment and Energy last year found that moving business applications to the cloud could cut the associated per-user carbon footprint by 30 percent for large, already-efficient companies and as much as 90 percent for the smallest and least efficient businesses.
All of that is good news. Cloud computing is one of the most disruptive Internet infrastructure shifts to happen in recent years. Web companies have been embracing cloud computing in order to buy flexible, lower cost, on-demand computing power from companies like Amazon. And these cloud computing services generally replace the computing that would have been done by companies’ own in-house computing resources.
However, it’s always good to take these studies with a grain of salt. There’s a reason AT&T and Microsoft are looking into the energy efficiency of cloud computing: they sell cloud computing services.
Other studies have also found that cloud computing isn’t always the most energy efficient computing option, and in certain instances the cloud can be more energy intensive than traditional in-office computing. A report from University of Melbourne researcher Rod Tucker and his team, which I wrote about for GigaOM Pro (subscription required), found that cloud computing can indeed save energy when it leads simply to the consolidation of servers, but looking at three different applications of cloud computing — storage, software and processing —  energy efficiency savings are negated in some scenarios.
For example, one such instance when the cloud isn’t more efficient, according to Tucker’s research, is when companies are using cloud computing for storing data. Tucker found that when the number of downloaded and accessed files becomes larger (more than one download per hour for a public cloud storage service), those energy efficiency gains are erased.
There’s enough research out there by now that shows that cloud computing is overall more energy efficient than traditional in-house computing. Which is great news for Internet companies and cloud computing providers. The growing energy consumption of the Internet, data centers and our always-on connected devices will only continue to grow, so efficiency trends will only to continue to become important.

Wednesday, July 20, 2011

The Best Free Antivirus Software

Every computer needs antivirus protection, period. If cost is an issue, try one of these nine free AV apps.

The Best Free Antivirus If your computer ever connects to the Internet, it's potentially exposed to viruses and other malicious software. As last year's Stuxnet worm demonstrated, even a computer that never connects can be compromised through an infected USB drive. Given the quality of free antivirus software available, there's no excuse for failing to install protection. The question is, which is the best free antivirus?
Publishers of free AV software don't always put out a new release every year. None as yet have jumped on the 2012-edition bandwagon: but that's OK: It's still 2011. Here's the low-down on recent free antivirus releases. Here's the low-down on the most recent releases to help you choose the best free antivirus software.
Blocking Malware Attack
When you get a brand-new computer the very first thing you should install is a good antivirus. Not sure which one to choose? Install a free one to stay protected while you're researching your decision.
Ad-Aware FREE Internet Security 9.0 (Free, 4.5 stars) scored well across the board in my hands-on malware protection tests. It detected 91 percent of the threats and scored 9.0 points, the best score of any free product. Comodo Antivirus 5.0 (Free, 3.5 stars) actually detected more threats, 94 percent of them, but was just slightly less effective at blocking them, for a score of 8.9 points.
All of the free products did a decent job of protection, though avast! Free version 6.0 (Free, 3.5 stars) was less effective against scareware threats and AVG Anti-Virus Free 2011 (Free, 3.5 stars) less effective against scareware. For an explanation of how I arrive at these scores, see How We Test Malware Blocking.
Free Antivirus Malware Blocking Chart Fighting Existing Malware
You can't always start with a clean system. A free antivirus can be very handy when you need to clean up an infestation of malicious software right now. Ad-Aware FREE proved very effective in my malware removal tests. Comodo, the other top scorer for malware blocking, didn't do nearly as well at cleanup.
Panda Cloud Anti-Virus 1.5 Free Edition (Free, 3.5 stars) is the only one of this group tested with my 2011 malware collection. It detected 91 percent of threats, the same as Ad-Aware, but scored much lower due to incomplete cleanup. According to Panda,an update with improved cleanup abilities is in the works. Microsoft Security Essentials 2.0 (Free, 3 stars) doesn't shine either at blocking or cleanup.
Several of the free products specifically aim to clean up malware problems, not to give you ongoing protection. Symantec designed Norton Power Eraser (Free, 4 stars) to aggressively deal with scareware and other persistent malware that may prevent installation of a full-scale antivirus product. The similar Norman Malware Cleaner 2.1 (Free, 3.5 stars) was especially effective at detecting and removing scareware.
When tech support agents for other antivirus companies hit the wall trying to help users, they sometimes invoke Malwarebytes' Anti-Malware 1.46 (Free, 3.5 stars) to perform the initial cleanup. In my tests it tied with Ad-Aware FREE for top overall score, though it wasn't as effective against rootkits. For details on how I derive these scores, see How We Test Malware Removal.
Free Antivirus Malware Removal Chart Your Best Choice
Which free antivirus should you choose? Since they're free, you can try several to see which suits you the best. In my testing Comodo and Ad-Aware FREE were especially effective at blocking new malware attacks, while Panda Cloud and Ad-Aware FREE did a good job removing existing malware. Where others excelled at one task or the other, Ad-Aware FREE Internet Security 9.0 handled both protection and cleanup very well. It remains PCMag's Editor's Choice for free antivirus.
Ad-Aware Free Internet Security 9.0 Ad-Aware FREE Internet Security 9.0
 
Most free antivirus utilities are good at either malware removal or malware blocking, but not both. Ad-Aware Free proved very effective in both areas, almost as effective as Ad-Aware Pro. This is a great free antivirus solution for non-commercial use.
avast! Free version 6.0 : Full Scan avast! Free version 6.0

Avast! Free has some dandy new features, and it's a great-looking program. However, the new features didn't shine in my testing. It needs to do a better job cleaning up the threats it detects. Since it's free, you can give it a try and make your own decision.
AVG Anti-Virus Free 2011 AVG Anti-Virus Free 2011

AVG Anti-Virus Free 2011 is better at removing malware than most free solutions, but not at malware blocking. With the current release it has the full power of AVG's paid solutions, and the independent labs give it top marks. Add some unusual bonus features and you've got a solid choice for free antivirus protection.
Comodo Antivirus 5.0 Comodo Antivirus 5.0

Comodo promises to keep a clean PC clean, and it delivers on that promise. It does include a component to scan and clean infested systems, but this component doesn't really work. Consider using a different free tool for cleanup, and be prepared to carefully peruse Comodo's numerous popups.
Malwarebytes Malwarebytes' Anti-Malware 1.46

When support agents from other vendors run into malware that foils their own product they frequently direct users to run Malwarebytes. I can see why—it's small, fast, and simple. This free product should definitely be in your toolbox. Just don't pay extra for real-time protection.
Microsoft Security Essentials 2.0 : Scheduled Scan Microsoft Security Essentials 2.0

If using a Microsoft product gives you a warm, safe feeling you may consider relying on Microsoft Security Essentials for antivirus protection. The independent labs give it good ratings, for the most part. In my own testing, though, it didn't shine. Other free products offer better protection.
Norton Power Eraser : Ready to Restart Norton Power Eraser

Norton Power Eraser's aggressive detection features catch threats others miss. It can also remove malware that blocks antivirus installation. The combination of Norton 360 and Norton Power Eraser set new scoring records in all categories of my malware removal tests.
Norman Malware Cleaner 2.1 : Scan Results Norman Malware Cleaner 2.1

Both PCMag's tests and independent lab tests show that Norman's malware cleanup isn't the best. However, this free tool runs even when malware blocks installation of more full-featured products. Give it a try when you need a quick fix.
Panda Cloud Antivirus 1.5 Free Edition : Installation Options Panda Cloud Antivirus 1.5 Free Edition

This free antivirus solution minimizes its impact on your system by using the cloud for malware detection, and its simple user interface is easy on the eyes. In testing, it didn't completely handle every detected threat, but it's still a reasonable choice if you're looking for a free solution.