So far I only know of these two:
http://www.identifont.com
http://www.whatthefont.com
Do you know of any
software ? For instance FontGenius. Except it's Mac-only... Or maybe a way to run OS X apps (FontGenius) without virtualizing OS X and using up 20 GB for a frigging app...
Are there any forums dedicated to tracking down fonts ? IRC channels ? Something.
Edit:
5 Great Freeware Font Identifier Tools to Identify Fonts from a Sample