Smartphone-based communication service, combining a) voice calls, b) geolocation and c) twitter-like hashtag grouping.
CallAround gives ability to find people geo-closest to you by hashtag (profession or interest or whatever) and voice-call them with your phone. User can become “findable” too.
Service proposes a multitude of social and small business uses - with tags like #girlWantsCinema, #occupySchoolLibrary, #beerNow, #emergencyLawyer, #washMyCarNow etc.
Has Twitter and Facebook integration (profiles, groups, likes).