How does Groupon address concerns of loyalty / merchant retention? Build tools directly into the product that allow customers to communicate directly with the merchants. It's an easy, smart way to connect buyers with sellers - without interrupting either flow.
The experience (from the language to the graphics) is very positive ("Award a Business"). I am not entirely sure what the award is... and I am not entirely sure what is done with this content... but I applaud Groupon making an effort to address concerns and I always like tools that better connect both sides of the marketplace.
