Google Places replaced Google Maps in an attempt to clean up spammers.. Google have stepped up their procedures now and you can only set up a Google Places listing once you have received a pin number in the post - this ensures that the business who is saying they are at a certain address actually do exist there. So...
Google have done it again... just when you think you're on top of the game and your website is sitting nicely on page one of Google organically, the rules have changed, making Google Places even more important to your optimisation strategy.