I don't know if you get these, but about twice a month we get what looks like a refund check in the mail, usually for a couple of dollars and change, from some yellow pages company. Today we got one from "Directory Billing, LLC" for $3.25. We get a lot of small checks for pay phone and ATM commissions, NSF check refunds, etc, so sometimes these almost slip through - be VERY careful.
Why? Well, the check looks all normal and innocuous, but in tiny grey lettering in the background of the endorsement section on the back, there is a lot of legal verbiage that amounts to the following "by endorsing and cashing this check, you are signing up for a directory listing in some random yellow pages you never heard of for some god-awful amount of money which we will bill later".