Twitter has introduced a new function to its location based services, which will be available soon within many countries. This function Twitter Places is an enhancement to the already existing Geotagging API, which enables to add a geographic location to a Twitter post. By Twitter Places a location may be concretely named. Furthermore Twitter collaborates with the lbs services Foursquare and Gowalla, which enables to access and exchange information provided. A broader introduction is provided by the Cnet article Twitter adds option to tweet location by name, information about the launch is available by the official Twitter blog post Twitter Places: More Context For Your Tweets.