1. They know me in real life.
2. They’re interested in something I talk about often (or they are interested in the smart things I RT from the people I follow!); Art, pop-culture, food, travel, gospel, (weddings, according to Klout.com) and others.
3. They found me through a common interest. We may have commented on the same blog, or connected on Pinterest or Etsy, or listened to the same podcast. Sometimes a small comment or connection will inspire a follow, just to see what happens; sometimes a life-giving conversation grows out of it, but sometimes nothing happens to foster the initial connection.