The document summarizes demographic information about users of major social media networks from an infographic created by Online MBA. It finds that college students and graduates make up the majority on sites like Facebook, Twitter, Pinterest, Digg and Reddit. While women are more active than men on social media overall, specific sites skew more toward one gender - Pinterest is dominated by women at 82% and Google+ by men at 71%. LinkedIn has a more even gender split and its users tend to be older, with 49% over age 45.