1 Billion Facebook Users? Place Your Bets!

Now that Facebook has reached the 500 million-user mark, Ireland’s largest bookmaker, Paddy Power, is accepting wagers on when the social-networking site will double that mark and hit 1 billion users.
For conservative gamblers, the favorite is the first half of 2013, and for those who favor risky bets with high payouts, an option for later in 2010 is available.
Paddy Power’s odds:
2010: 100-to-1
First-half 2011: 33-to-1
Second-half 2011: 10-to-1
First-half 2012: 5-to-2
Second-half 2012: 9-to-4
First-half 2013: 2-to-1
Second-half 2013: 4-to-1
2014 or later: 5-to-1

david.cohen@adweek.com David Cohen is editor of Adweek's Social Pro Daily.