Remember to always dream big. Of course, in real life you will never best Facebook; but that's no reason why you cannot dream of doing so! For, in that spell of 'madness', maybe, a sudden burst of inspiration will strike you, and your Eureka moment will empower the new social network of tomorrow. There's always a chance, and when that option opens up, there's no reason it couldn't or shouldn't happen barring your own diffidence. So, do your due diligence, and keep your powder dry.

And, Good Luck!