Firefox 3 is released! I have used it for a few weeks already, and am very happy with it. (Update: a day-and-a-half later, it has been downloaded over ten million times!)
Among these recommended extensions, I find a few especially useful: Ablock Plus, All-in-One Sidebar, Customize Google. DownloadHelper, Foreastfox, IE Tab, PDF Download, PicLens, Menu Editor, QuickNote.
Another benefit of Firefox is that this site actually looks good on it! (I noticed recently that the single page view is a little off with Internet Explorer – all lower case letters, the comment field is not in the right position, etc. I’ll look into it at some point.)