I have never used “groupon”, but I did use “livingsocial” once. I will not use it again myself. I actually use a local media adv. called “seize the deal”, they actually reimburse you a percentage, & the only reason I use it is because of the free advertising I get on about 3 local radio stations, it gets my name out their, I only use them no more than twice a year though, because I have seen a trend that the same customers buy them and the only time you see them in the store is with a coupon in their hand, yeah its good that they return, but you do get the ones that only spend the min. I also use a local tv news station once a year, they sell certificates for local businesses, & we actaully go in and do a small commercial of our business, & I actually pay nothing for that