Not sure if friends would want to venture to a new cafe or bar? Superb, an iPhone app that launched last week, lets users create lists of popular places they would like to visit and shows them a list of other people who would also like to go there. Its all about hanging out in the real world and getting offline, and the best way to do that is to know where people want to go, said Eddy Lu, co-founder and chief executive of Venice, California-based Superb. It also reveals friends who would like to visit a venue.