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.

Email from Google

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.
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