Loopt has announced a new service that’s essentially a reverse Groupon, allowing users to get custom deals made on demand. The geo-social app company believes u-Deal will be able to turn a merchant’s best customer into its biggest advocate. And, since the service empowers consumers to create the deal, it’s far less obtrusive than Groupon, which provides daily deals for places you’ve never been to, or may never want to go. u-Deal gives users the ability to create a deal and get friends to sign up for the deal. Finally, Loopt sends the deal to the business for approval. This is a unique system…