Check out Groupon Stores. Groupon just released a self-serve store for deals where you can get customers to follow your business and push out deals to them. They're not exactly the same, but Groupon's new offering is a very different beast than the daily deals it was offering before and much closer to Facebook Deals. Those two combined with the LBS's going to make it very interesting for businesses. Marketing is changing at an increasingly rapid pace and while there are themes, I don't think anyone can guess where it will be in a year or two.