User count is only one dimension of the value that Facebook has. The user connections are arguably the more important dimension.
As Facebook figures out more ways to be a more pervasive force in people's lives, they'll have the ability to multiply the revenue they receive on a per-user basis.
As Facebook figures out more ways to be a more pervasive force in people's lives, they'll have the ability to multiply the revenue they receive on a per-user basis.