All listings show up in Map Maker, even if they are SABs with hidden addresses. It used to be that if you used a fake address, like a UPS box, all we saw in Map Maker was a listing without an address, so we couldn't judge if they were legit or not. Some changes have been made over the past few months, as now all SAB listings show their address in Map Maker once they are imported (which means you can't just delete a place for showing their address, you need to check Maps/Local, I'm working on putting together a "How to" for everyone). This is great, as it let's you check places such as this one.
First thing I did was make sure they had their address hidden in Maps... that's good.
Second thing I did was look at the fact that the address is a K-Mart... that's bad.