Trying Internet Explorer 7 beta 3 on Windows XP SP2. Not as bad as one might expect. Quite a few Firefoxisms (from the tabs and RSS support to the “Find More Add-ons” mechanism). Some features are rather well-implemented (for instance the pop-up blocker in the add-on bar) and it seems like its performance is decent on a very fast connection. Despite my opinions of Microsoft, this version of IE seems quite decent. Actually, it seems to be the one browser which works appropriately with the Categories box in WordPress. Neat.