This is interesting. A social networking start-up using Virtual Earth and "Web 2.0" technologies.
From ITWire - "Co-founder and CTO Chandu Thota previously worked at Microsoft where he was a central figure in building the Microsoft Virtual Earth online mapping platform and Live Search Maps. He has recently authored "Programming MapPoint" and "Virtual Earth in .Net" by O'Reilly publishing. He is listed as an inventor on more than 14 patent applications for Microsoft related to geo-spatial mapping and technology."
iTWire - Get to know your neighbours, via the Web