I registered them myself, about 4 friends are active and my friend brought me here 3 months ago. As time passes, I believe that more and more people will start using Steem, its not so mainstream right now and it is only beta version. Imagine in few years when all bugs get fixed, Steemit and Steepshot could have some sort of messenger and even games like facebook. Amazing potential, just needs some time to improve and promote.