Search and social networking are very different in their ability to persist, IMO. While switching costs are low with search, the ability to offer a better prod

Search and social networking are very different in their ability to persist, IMO. While switching costs are low with search, the ability to offer a better product is difficult. Momentum gives you little advantage in search. For example, Bing is not marginally better positioned with 14% market share vs when it had 9%. Social networks are almost the polar opposite. It's hard to get any traction at all in social because switching costs are high. But if Facebook sees a competitor get 5% of its user base and then a few months later have 10% they should be scared to death. It probably means Facebook is already dead and just don't know it yet.