The Facebook app for iOS has been updated to version 3.4. It brings along the Map View for the Places section, a Check-in function for events and places and even a un-friend option straight from your device.
Today it seems a lot of emphasis is being put on check-in functionality on our handhelds. Earlier it was the Google Maps for Android, now this. Well back to the story at hand. You can now use the Google Maps, straight from your Facebook app on the iPhone and choose a place to check-in nearby to you. This can, then, be seen by your Facebook buddies.