Yes, one of our YC partner Dalton Caldwell hammered this idea in my mind. He told me that when he sees a founder trying to attack a product that other have either failed or succeeded at - he looks for what they've learned from those folks. If the founder dismisses previous attempts to solve this problem or similar ones - that is a very bad sign.
Just curious growth wise, did Socialcam have a lot of word of mouth, or was some growth hacking involved as well. 16 million downloads in 3 months is incredible.