Today at an event in Palo Alto, CA, Facebook unveiled its new Places product -- essentially their check-in utility . Obviously, there has been a lot of talk about what this means for the current players like Foursquare and Gowalla. Well, Facebook is partnering with both of those guys. We hinted at this possibility a couple days ago . Representatives from both Gowalla and Foursquare were invited to take the stage at the event to talk about how they plan to leverage Facebook's new Places API. Both will allow you to check-in and publish the data to your Facebook feed. Your badges and pins from each of those apps will transfer over as well. As we expected, Facebook is playing nice with these guys -- and they're clearly excited to play nicely back given Facebook's 500 million users.