I have started taking a tour of some of the location based social apps that are out there since I haven’t had time to write code myself. The first one have been playing with is brightkite.com which can act as a stand alone web app, a location feed for Twitter and works with Yahoo’s Fire Eagle. A quick example of a BrightKite map is here which is a checkin I did from PA. The location information from an account is shown through a list or map of visited places and you can create a series of shortcuts to different Placemarks for quick updating. There is the general friends settings so that you can follow others and of course you can find folks based on location. As with most of these apps you can access it via web or SMS. Check it out if you can get an invite.