Gavin Newsom

Chris Nuttall

The App Store is becoming as overused a buzzphrase as Web 2.0, with San Francisco now implying the city itself, as much as any device, can become a platform for applications.

Gavin Newsom, the city’s trendy Twittering mayor, guest-posted on the Mashable blog on Friday. He announced the launch of the DataSF App Showcase, “a City App Store to highlight and centralize programs created from City data.”