Today I got an email from Google (as a google apps admin) saying that over the course of 2010 they we will be phasing out support for Microsoft Internet Explorer 6.0. The same is also communicated at their blog.
Also when opening Facebook from IE7 browser I got a box on the top suggesting me to upgrade to IE8. Earlier last year similar phase out warnings had started to appear on YouTube as well.
Some organization have long been running on IE6 and upgrading the browser is a big task for their IT departments. No wonder IE6 still commands as much as 20% of the browser market. It is only such actions on part of major websites, that can shake the organizations to make the shift.
One of the other reasons for phasing out IE6 is its security vulnerability. As this Zdnet blog points out, earlier last month Microsoft had admitted that the attack from China on Google and some other US companies had exploited a hole in IE6, which was also present in IE7 and IE8.