Netpop Research has released a report that says that around 40 million Americans contribute to social networking sites. 76% of all US broadband users actively contribute to social media sites, and 29% regularly contribute to social networks. (via)

Who are these social networkers?

Netpop tells us that the typical social networker is female (57% vs. 43%), between 18 and 29 years old, employed (55%) or a student (23%), and single (48%). Broadband users who don’t contribute to social networks are usually older, married (57%) men (57%).

People that contribute to social networks will spend on average of about $101 online, while the folks that aren’t a part of social networks spend around $80.

MySpace Vs. Facebook