Shout’em today adds a major new feature to its service which could well super-charge it into a whole different place: location. The white label service lets you build a Twitter-like social network, but it now leverages Foursquare’s API and Twitter’s GeoAPI.

The mobile-optimised social networks can be private, location-based and used by any niche group. So far Shout’em has apps for java phones, the iPhone, android. They are now adding a Blackberry app to that roster. All will be leveraging the location feature. In addition Shout’em is throwing in some augmented reality magic into its iPhone app. The Android app is still in progress.