The real challenge is to then bring learning and creative endeavour into Facebook.
So I read with interest this suggestion from Nicholas Carr:
Facebook should capitalize on Wikipedia's open license and create an in-network edition of the encyclopedia.
It would be a cinch: Suck in Wikipedia's contents, incorporate a Wikipedia search engine into Facebook (Wikipedia's own search engine stinks, so it should be easy to build a better one), serve up Wikipedia's pages in a new, better-designed Facebook format, and, yes, incorporate some advertising.
There may also be some social-networking tools that could be added for blending Wikipedia content with Facebook content.
Watch that space...