“It starts as a gimmick but there’s money involved,” said Doug Ferguson, a professor of communication who teaches a social media graduate course at the College of Charleston. “If companies want that business they need to be on these sites. Then someone is going to make a lot of money”.
http://www.thesunnews.com/2010/11/23/1828673/sign-in-services-bring-benefits.html#ixzz167Zhaa1a
