I've been hearing a lot about WebKit being on the bleeding edge of staying up-to-date with performance and passing various tests like ACID 3. I was confused and concerned, though, because I had thought WebKit was only available to developers as a set of components (DLLs) and was not actually usable by end users.
I was sort of right, but mostly wrong. WebKit's nightly build, which is downloadable, runs on top of Safari (from a user perspective, that is .. technicaly, Safari sits on top of WebKit), replacing Safari's rendering engine with the latest "new and improved". After Safari 3.1 is fully installed, just download the latest nightly build of WebKit, run the batch file and go. (There were two batch files, I ran run-drosera.cmd and then I added a shortcut to run-nightly-webkit.cmd to my Quick Launch toolbar and changed the icon.) WebKit does not kill off the official Safari renderer when Safari is launched in its normal fashion, it only overrides its renderer when launched from WebKit's .bat file.
Now I'm starting to think that Safari on the latest WebKit is the best browser. *gasp* Who'da thunk?