Back in August, Twitter announced that it was getting ready to roll out an ambitious new project: Geolocation. The idea was to be able to attach a location to every tweet. Today, the API has been officially turned on, but location is not a part of the main site — yet. This means that applications that have been buit using the APIs — such as Birdfeed, which we previewed recently — will be the first able to use location features. As Twitter notes, Seesmic Web , Foursquare , Gowalla , Twidroid , Twittelator Pro and a few others are also supporting location right now.