I've been on Internet based social networks since about 1990 when one could actually keep up with EVERY post on usenet. Fact is, every identifiable social netwo

I've been on Internet based social networks since about 1990 when one could actually keep up with EVERY post on usenet. Fact is, every identifiable social network has a distinct lifespan and will evaporate - Facebook being no exception, and now would be a good time to sell FB stocks if you have them.