I'll disagree with the notion that "Social networks are a winner-take-all game". I, and i'm sure many others do too, use different social networks for different

I'll disagree with the notion that "Social networks are a winner-take-all game". I, and i'm sure many others do too, use different social networks for different group of friends. I.e. I use Facebook primarily to keep in contact with my family and friends who i don't see on a regular basis. I use LinkedIn to keep in touch with people I met on a professional basis. I use Whatsapp to keep in touch with people who are really close to me. I know Whatsapp is not exactly a social network but I believe that it is a first step towards fulfilling a niche that is ripe to be disrupted: A social network for your INNER circle of friends; close friends/family that you interact with on a regular basis. I don't believe any "social network" has fulfilled this niche yet. So in short, social networks is NOT a winner-takes-all-game and there are opportunities to disrupt. I myself is attempting this by taking the Whatsapp model and expanding on that.