>I think there is literally 0 chance for another Facebook. Google tried with Google+ - billions of dollars, millions of man hours by brilliant engineers, crazy bundling strategies by Google. Is Google+ another Facebook yet? Nope, not yet, maybe not ever.

all this still doesn't make it "cool" with 1B of teenagers (don't know what does - if i knew i would probably not be wasting time here :), and 1B a new Facebook would make.