ReadWriteStart

With the rapid growth of services like Foursquare, Gowalla and Brightkite, location-based mobile social networks seem to be a dime a dozen these days, but they're only fun and useful

Though I'm chronically checking in on services like Brightkite, Loopt and Foursquare, it's rare that I'll actually make an appearance at the behest of a friend's status update. For the

According to the Brightkite blog, yesterday evening 3rd party developer Chris Hallgren opened the source code for his Brightkite BlackBerry application (Brightberry). Denver-based Brightkite is best known as the