I was just thinking about using siFr a little bit, but before doing so, I wanted to see what fonts I could use on the web safely. I just took the Dreamweaver default set and laid it out so that I could have a realistic peek as to what the fonts would look at in my browser. Since I went through the trouble of building the page for myself, I figured I'd share it - Web Font Families Nothing spectacular, but if you want a peek at what Dreamweaver says you should use, head on over.
I think that's because Tahoma is a little bit less common than the others - it's just the list that I got out of dreamweaver. No research on my part.