CoreCats

Social Lives of a Cell Phone
Say you’re young and single, and you’re out on the town one Saturday night. With a hot new service called Dodgeball, you take out your mobile phone and tap in the name of the restaurant where you are hanging out. You get a list of friends, and friends of friends, within 10 blocks. You can message each other about getting together, and maybe send a photo of yourself. Social connection services like this, based on mobile wireless devices, are about to radically changes how we communicate with friends, family, and colleagues.
http://www.technologyreview.com/articles/wo_bender071204.asp?trk=nl