The S-1 filing will almost certainly contain enough info to allow my bets with jacquesm and il, that Facebook's revenues would reach $2B/yr by 2014, to settle (2 years early!):
http://news.ycombinator.com/item?id=689993
http://news.ycombinator.com/item?id=1163144
Would still be happy to take $200 in Facebook stock instead. :)