Facebook has launched its long awaited geolocation service, Facebook Places. Places is very similar to other location based services like Foursquare and Gowalla. It allows you to check in to places you visit, and also tag friends with you at the same place. You can also edit the privacy controls to disable tagging with Places.
You can view the recent activity of your friends at the place you are checking in. There is also a “People Here Now” section which allows you to see others who are checked in at the same place at that time. You can prevent yourself from being added to the section by editing your privacy controls.
Facebook is also working with companies like Foursquare, Gowalla, Booyah and Yelp; they can use the Places API in their applications to get and send location data to and from Facebook.
Facebook Places is currently available only for users in the US. To start using Places, you can download the latest version of Facebook for iPhone or use touch.facebook.com if your mobile browser supports HTML 5 and Geolocation.
Facebook has a 500 million user base which is much higher than all the other location services combined. With Places, it can also rule the geolocation space.