I don't know a single person (outside these forums) who uses Safari for Windows. Most seem to go 'oh look there's a browser from Apple - install, try, uninstall'.
I am a forum user, yes, but I actually used Safari on Windows as my main browser for the past summer. My wife and I shared a laptop and both have Gmail accounts. So, she used Firefox and I used Safari so that we wouldn't have to keep logging in and out to check our email. I didn't mind Safari too much, but I still choose Firefox over it.
I'm writing this post beta 3.0.4 right now. They've brought over some much needed shortcuts (like Ctrl - Tab to switch between tabs. THANK YOU! The other way was a joke!) Safari still has a long way to go if it wants to be my main browser. The look is too dark and the interface is clunky.