RE: What browser do you use?
I started on IE but went to FireFox because of the tabbed browsing and it was great until V2 came out. V2 was always crashing, hogging up RAM, and in general being a pain. I downloaded IE7 and haven't looked back. It never crashes no matter how many tabs I have running and it is less obtrusive than FF. Maybe when FF v4 comes out I'll try it but I'm so annoyed with v2 I'm skipping right over v3.