Mobile Social Networking Users As Percent of Mobile Internet Users

With social networking becoming so much intertwined with internet usage, and assuming that the mobile internet users form the more tech-savvy among internet users, I would have expected a very high number of mobile internet users to be using the medium to connect to social networks. But that is seemingly not the case. Here are the projected number of mobile social networkers in the near future and the percent of mobile internet subscribers (worldwide) it constitutes

2008 : 76 million (19%)
2009 : 141.4 million (28%)
2010 : 223.4 million (34%)
2011 : 318.3 million (37%)
2012 : 454 million (40%)
2013 : 607.5 million (43%)
2014 : 760.1 million (45%)