I've always felt that facebook was a better contacts management system than what came before, the "social" bit e.g. snooping on other peoples lives was just a r

I've always felt that facebook was a better contacts management system than what came before, the "social" bit e.g. snooping on other peoples lives was just a really good way of keeping you engaged because it didn't exist before in such an accessible way. I kind of wonder though whether we won't see a kind of craigslist aftermath effect, where craigslist comes along and provides a service which everyone wanted and then other startups choose particular niches and attempt to do them better.