They call it the “CrowdSaver,” and guess how it works. When a deal reaches a certain customer threshold, the deal is unlocked and everyone gets to buy in for a discounted price. The only difference between Walmart’s CrowdSaver and Groupon (and it’s a big one) is the upfront money.
When you choose a deal on Groupon, you’re committed to buy provided that the deal hits the threshold. (I’ve always wondered what percentage of deals never hit the mark. . .. ) Walmart isn’t looking for your credit card info or a purchase promise. All you have to do to join the deal on their Facebook page is “like” the deal.