However, it really does'nt scale if you'd SMS all your friends to see if any of them are up for grabbing a bite. Not trying to sound mean but I often read argu

However, it really does'nt scale if you'd SMS all your friends to see if any of them are up for grabbing a bite. Not trying to sound mean but I often read arguments like that for the next big social web thingy and I find them very contrived. Coordinating group events is certainly an interesting application but I think you should find a better use-case than "grabbing a bite". Remember people are just animals and strongly conditioned on taking the path of least resistance - especially when hungry...