According to a new edition of the SheSpeaks “Annual Social Media Study,” social networking profile penetration climbed from 58% of Internet users in 2008 to 86% in 2009. 80% of female Internet users said they had become a fan of a product or brand on a social network. In addition, 72% had learned about a new product or brand, or joined a group around one. Respondents to the study were less likely to participate in product- and brand-related activities via Twitter. One-half of female Internet users had brought a product because of a social network, a dramatic increase over 2008, and 40% had used a coupon code found on Twitter or Facebook. More details at eMarketer.