Twitter and Instagram are becoming popular social platforms among blacks. Among black Internet users, 26% use Twitter, far outpacing whites (14%) and Hispanics (19%). In August 2011, 18% of black Internet users were using Twitter. Women favor Pinterest. The gender difference in social-media usage was most noticeable in Pinterest, an online pinboard. A quarter of female Internet users are on Pinterest vs. 5% of men. To read more, click here.