LinkedIn Statistics: Adding New Users At Rate Of Two Per Second

LinkedIn now has 200 million users worldwide (we had started linkedin stats from when they were 85 million - we had said "At its current growth rate, and assuming that facebook doesnt grow at all for the next few years – how long would it take LinkedIn to become as big as facebook? 17 Years. " Source - we do not know if that would still be true, but today's numbers show that the professional network has seen some solid growth (Source)

How do we digest this number? Let us try this: Twitter and Google Plus have half-a-billion users each. And Facebook is at a billion plus. Solid numbers, these.