There is no sensible reason to keep using Internet Explorer 6. Microsoft is up to IE8, and IE 6 is not standards compliant, fast or safe. It takes extra work to test a site for it, yet many people still use it. If you are a web developer and need to test a site for IE6 compatibility, you can still install it on Windows XP or do other tricks to have it available.

Here's an alternative way to test according to Elbert F, at http://elbertf.com/:

"If you’re already running IE8 there is an easier way. Compatibility View will render pages as IE7, and a missing doctype will cause pages to be rendered as IE6 in quirks mode.

You can simply remove the doctype from your pages when you’re testing for IE6 or ― if you’re using PHP ― add a simple switch:

strict.dtd">

Now you can simply add “?ie6” to the URL in IE8 to see what your page looks like in IE6. You can even keep several tabs open to make sure it works with all versions."