I recently came accross this site. Great to spread the word amongst people stuck with IE6. Although i am not that big fan of IE7 either, and i would definitely change the order of the recommendations.
[UPDATE: the above link was removed. Read on here.]

Why IE6 sucks? There are many issues, just to grab one, it is poor CSS support. Related to this there is a new doc from Microsoft showing the css selector support in running versions of Explorer. That might be useful to check one day.

This is an archive post. It represents a point of view in the past. Facts might have changed, events might be interpreted differently as of today. Links might be broken.