Ask any web developer and they will tell you one of their largest annoyances is testing their work in multiple browsers. In my work I find myself now testing sites in 3 versions of IE, 2 versions of Firefox as well as Google's Chrome and Apple Inc.'s Safari. Now this may just sound like a mild inconvenience to everyone else but there are extremely good reasons why you should upgrade your personal web browser.
I am not going to go into all of the flaws and fixes for previous browsers, this has been covered by endless articles online for each browser currently and previously available. If you would like to find the specific on your current browser I find Google to be a great tool as well as the site for the developer of your browser.
Here is what Microsoft says to the question "Why Should I Upgrade"?
"Microsoft has redesigned Internet Explorer from the ground up, with better security, new capabilities, and a whole new interface. Many changes resulted from the feedback of millions of users who tested pre-release versions of the new browser.
For me, the most compelling reason to upgrade is the improved security. The Internet of today is not the Internet of five years ago. There are dangers that simply didn't exist back in 2001, when Internet Explorer 6 was released to the world. Internet Explorer 7 makes surfing the web fundamentally safer by offering greater protection against viruses, spyware, and other online risks."
One of the most crucial reasons to upgrade your browser is security. Internet Explorer 6 is one of the most targeted browsers for attacks known as browser hijacking. Browser hijacking though only one of the issues in browsers is the most common, it includes things like having your homepage set and links added to pages you would normally avoid, a barrage of pop up ads and new toolbars being added. Newer browsers include security fixes to close loopholes which are taken advantage of by those with malicious intent.
Another ever growing improvement in browsers is their pop up blockers. There was a time when you needed a separate piece of software to eliminate pop up ads from your browsing experience now these are built directly in to make your experience that much better. As the web develops, people exploit new ways to give you these wonderfully annoying ads to you, the software developers who create these programs are following close behind to stop them. By upgrading your browser and keeping up to date with the security updates you keep yourself on top of the game.
Browsers are also growing to keep up with the expanding capabilities of web programing, so by keeping your browser updated you can insure that you view sites the way they were intended. Older browsers respond differently to some scripting languages and do not always support the same layout methods as newer browsers. These growing methods have come around to provide better experiences to everyone, including not only the visual and interactive aspect of the site but usability and performance as well.
Currently the most outdated browser I find myself dealing with is Internet Explorer 6 which was release in August of 2001. Some of the major flaws with IE6 include no support for transparent PNG files, poor support for web standards compliant code, slow operating performance, outdated pop up blocker and no support for tabbed browsing. IE7 the replacement was released in 2006, and now the newest version IE8 had it's first public release candidate in Jan of 2009.
There is really no good reason not to upgrade your web browser. Browsers are free, you can download the latest version and updates from the developer then have it installed in less than 10 min.
Here is a list of the most popular browsers, if you install one I do recommend checking for updates to insure you have the most recent patches.
Mozilla Firefox 3
Microsoft Internet Explorer 7
Apple Safari 3
Google Chrome