Seems like the whole web fonts issue is making good progress these days.

Mozilla (thanks to the amazing Robert O'Callahan and John Dagget) has just recently joined the other User Agents implementing @font-face from CSS3 (not yet cross-platform but well on its way).

Open fonts - as in fonts released under the Open Font License - certainly have a key role to play as the W3C recognizes. And for this IMHO the next step is parsing the font metadata and showing it to the user so they can know more about the fonts used in each page: for example which designer, supporting organisation/foundry is involved (there are links for that too), some description and among other useful things if it's an open font or not via the License and License URL fields. The Opentype spec has provision for enough metadata placeholders.

The idea of expressing the OFL in Creative-Commons-like human-readable icons may well be the model to follow...