MasterCard Marketplace is offering a $50 Off $100 at WalMart for the first 1,000 users once the Overwhelming Offers unlocks at 50,000 check-ins (currently at around 40,000)!
Limited To: First 1000 Users
Offer Applies To: Online Items In-Stock (Excludes Gift Cards) at Wal-Mart
OO Price: $50.00 with Instant WOWPoints Tax, s&h not included
You Save: $50.00 (50% off)
Note: I’m not entirely sure how this program works, but you can read about it on the site.