[AFP] Figures released Thursday by Internet tracker eMarketer indicated that more than half of US Internet users log in monthly to Facebook while about 20 million US online adults “tweet.”An estimated 57 percent of Internet users, about 132.5 million people, will log in to Facebook monthly this year, according to eMarketer.
http://www.independent.co.uk/life-style/gadgets-and-tech/majority-of-us-internet-users-on-facebook-market-tracker-2226227.html
Majority of US Internet users on Facebook: market tracker
Figures released Thursday by Internet tracker eMarketer indicated that more than half of US Internet users log in monthly to Facebook while about 20 million US online adults “tweet.”