Walmart beware!!!!

I'm guessing you'd find the same response in any parking lot that has carts, or at least many of them (not limiting this to Wal Mart). Someone told me once that the store is responsible and those signs are just a deterrent to minimize claims. I have never verified what I heard, but I guess this story would indicate that is either false or stores are just really good at getting out of paying.

Has anyone ever gotten a claim in a lot of a store with one of those not responsible signs in it?