Our social-media lives create communities with their own personalities and interests. So what is the personality of the group that “likes” Mitt Romney on Facebook? What do they read? What music do Ron Paul devotees listen to? What sports excite Newt Gingrich fans? A data-sharing application on Facebook called Wisdom, created by MicroStrategy in Tysons Corner, allows the app’s users to see the patterns among the 3.5 million profiles of their friends. A Washington Post analysis identified the Wisdom users who “like” the major Republican candidates, and revealed the books, music and sports teams that appeal to them.