Facebook launched a new check-in service called Facebook Places. Facebook Places is very similar to Foursquare. Currently Facebook Places in not available in most regions, but it will be soon enough. For those of you that have access to Facebook Places right now, here is a tutorial on how to use it:

Dodgeball co-founder Alex Rainert has joined Foursquare as the chief product officer. Rainert and Foursquare founder Dennis Crowley founded Dodgeball together.