NO GROUPON.
Use uh. crap. Shopkick. It's free and if you just so happen to be out in Tar-jay or Wally World, you can scan stuff that gets you more "kicks"... The kicks add up to a gift card or other treats... Like a gift certificate to Coach, Tiffany, Kate Spade, or you can save up the 8 million kicks for a cruise. XDDD