If you don't mind a few bugs, lack of Flash and a lot of speed, you may want to give the new Google Chrome (Chromium) builds a try. The repository is being updated several times a day.
First impressions:
It doesn't come with Flash but Flash can be installed and will be in future versions
It is really fast. Even with several tabs going, it is Safari 4 type fast.
Each tab is a seperate process (see below). Each one takes 1GB of Virtual Memory but less than 100MB of real RAM.
It doesn't run 64-Bit in Snow Leopard yet - 32-Bit. It also doesn't run on PowerPC, the first Mac browser, not to do so.
I'm doing this post in Chromiumand spel chek doesn't work. Neither do file uploads
