Reddit was also borderline crazy when they came out - I remember thinking "Interesting idea, but why the hell would anyone use this?" Now a social news site is about as cliche as you can get.

Being borderline crazy actually seems to be a good indicator of success, as long as you're a.) not completely crazy and b.) stick around in the game long enough for other people to come around. I think Tony Wright said as much in one of his posts here...