Double-digit growth in social media users is over according to a new eMarketer study.
Though, as investment firms remind us, individual results may vary, the days of passively watching social media stats climb are coming to an end.
With 63.7% of US web users already use social networks at least monthly, we're close to the saturation point. By 2013, 164.2 million Americans will use social networks, or 67% of internet users.
Two revealing charts: