Web sites still not fully compatible with IE 8.

[JMH]

The bad news: More than 2,000 highly-trafficked Web sites are still not compatible with Internet Explorer 8 and require IE’s Compatibility View support to display properly. The good news: That is down from about 3,100 sites a year ago.

The new data is courtesy of a March 2 post on the Microsoft IE blog.

A year ago, when Microsoft first released Internet Explorer (IE) 8, it got kudos for making its browser somewhat more standards-compliant than previous versions. But increasing standards compatibility meant more incompatibility, as many Web-site developers had tweaked their sites to take advantage of far less standards-friendly IE 6 and IE7 and weren’t in any rush to make changes to accommodate IE 8.

Source -
Microsoft: More than 2,000 major Web sites still not fully compatible with IE 8 | All about Microsoft | ZDNet.com

 

[z3r010]

That's slightly misleading, some sites (like ours) just have IE compatibility mode enabled not because they are incompatible with IE8, but just so there are less browsers to test against.