Facebook has just announced Facebook Places. The new service from Facebook that lets you share your location with friends. Your friends will be able to tag you but you can always opt-out of having friends tag you on check-in. Facebook Places is “not about broadcasting your location with the world, its about sharing where you are with friends”. This sounds great, eh?

Facebook Places comes with an API that developers and partners can use. Gowalla and Foursquare have partnered with Facebook Places and more developers & partners are expected to join in. More details coming as the event is live at the moment.