Foursquare co-founder Dennis Crowley was one of the panelists late August at a Future of Hyperlocal City Guides discussion, along with Prximity, Buzzd and Mapcidy. Crowley previously founded Dodgeball, which Google ‘left out to die’.

CyberSynchs is a new smartphone data backup service. Founder Amos Winbush built a team of ten people to realize his vision. ‘When you have a service people believe in, they’ll sign on board with you.’

Clear Channel last month launched ‘the largest online radio advertising network ever’ with their sales subsidiary Katz Media. Nearest competitor CBS Radio has been working on a similar online push through New York-based startup TargetSpot.

The panel at Mobile Monday discussed the role of mobile and location based services in the monetization of social networks. ‘It can’t just be about advertising,’ says Verizon’s Jennifer Byrne.

Mobile search and advertising solutions provider Jumptap celebrated the opening of their New York office with a rooftop party at 230 5th.