There's one that's come out about Walmart and everyone has been using it, so much so that Walmart is cracking down and adjusting their policy on those who do this.
Do you think you can guess what they are? I think one of them is a little bit easier to think of or figure out than the other is but both of them are pretty well known.
They have already started to implement this strategy around the country, and if it hasn't already made it to all Ohio Walmart stores then it will be very soon.