Updated with data up to April 15, 2009
Current active users worldwide:
Share of active users for North America:
38% (=74.34 mio): 41% Male | 56% Female | 3% Decline to state
Most quoted fact on Facebook user growth:
The fastest growing group are Women over 55.
The O’Reilly numbers confirm it, but it also shows that the age groups left and right of the 55 – 59 bracket also grow very fast!