Chk dis Out for Fonts By Google Forget Arial and Times Roman Google webmaster tool Blog new Updation http://www.google.com/webfonts
They are all adapted from well-established font families that have existed in print media for quite a long time so I don't think "a 2 year old have designed them". BTW, if you are going to criticize something as looking immature, make sure your mastery of the language is mature.
just a CSS trick, @font-face old stuff, just these days almost all browser support it so many people start use it. In fact, its slow down page download
I've been using web fonts for a while and I reckon they're supported on 90%+ browsers and I think only IE 6 and some older SmartPhones don't support them... you can get a load of web fonts from Font Squirrel, which also has a font conversion tool so you can use any font you have on your machine as a web font online.