Yes, just what we need... more ways to make webpages look shitty, bloated and unreadable. Over the past 4 years, I've personally done at least two dozen usability studies and every one of the tests showed that simplicity always trumps elaborate design. No matter what you're trying to accomplish, you're always better off sticking to what people expect. People are used to Verdana, Times, Arial. I hate some of these fonts but people will test better if you stick to those fonts. Also, a lot of fonts just don't look great on screen and test even worse on readability. MS spent a lot of time on properly hinting these fonts so they are easy to read. By giving beginners this web fonts option, you're giving them more bullets to screw things up.

Now, one place where you think this stuff would help is Linux. Since Linux doesn't come with these "standard" web fonts, you need to substitute. Problem is that you cannot just put a link to these fonts inside your CSS since they're copyrighted by MS. So we're back to square one.

Rant: I wish Opera, MS etc. spent some time working on getting CSS2 working properly! They're already pushing for CSS3 and yet BASIC stuff, like box model, is all over the map and you still need hacks to get stuff working in multiple browsers. How about these companies (cough, MS) spend time getting the bugs out of current code so they can pass all those CSS tests instead of pushing even more useless stuff? Opera's JS is still subpar and supporting it takes a lot of tweaking.