Ian Lyman and Craig Mod have ginned up a Webfonts test page that uses genu-wine fonts from Underware. But very special fonts they are: “All of the type on this page was kindly licensed by Underware for specific use in this @font-face demo, as commissioned by the Mozilla foundation. With Underware's approval, we created glyph-limited editions of some of their typefaces for this one-time use only.” One-offs seem to be inimical to the entire concept of Webfonts, but we’re still at the demonstration-project stage, so I’m not all that surprised.
But! What’s the kicker? Everybody’s favourite curmudgeon Mark Pilgrim, he of “Fornicate the foundries” fame, derides the project thus (via Delicious): “[Hundreds] of open-source fonts, and they go out of their way to license proprietary alternatives.” Because typography, like information, wants to be free!