Google didn't exactly offer much fanfare for this new feature -- as far as we can tell, it still hasn't been officially announced. With the latest update to the Maps app, Mountain View delivered an extra level of functionality to the all but forgotten Latitude. Now check check-ins earn you points which are tallied and used to rank Google+ users on a global leaderboard, just like on Foursquare. Not everyone is seeing the feature just yet, and it
