Wow - fantastic and insightful data. Thank you for sharing! I especially found this to be staggering...
"Globally, of the 1.1 billion aged 15 and older who accessed the Internet in May 2009, 734 million visited at least one social networking site during the month. That’s equal to a penetration of 65% of the worldwide Internet audience..."
Seeing as how the success of these social networks rely on the laurels of their users, I wonder what new developments we will see to help keep users loyal and engaged? It will also be interesting to see how the social landscape evolves parallel to new gadgets such as netbooks and better smartphones.