I’ve been using Mozilla Firebird as my browser for a while now. Its had (another) rename and is now called Firefox.
One of the best things I’ve found with Firefox recently is Type Ahead Finding – just start typing and Mozilla will highlight a link. To skip to the next result, hit Ctrl-G; to open the page hit Enter; to open the page in a new tab hit Ctrl-Enter. I’m not normally a keyboard shortcut fan, but this really speeds up navigation.
Oh, and Flash works now. 🙂