Cheques really are not safe,
We got contacted from someone who wanted to pay with a certified cashiers check.
Well in the US, Banks have to honor it and pay out the money, but it could take up to two weeks before they can find out the check is bad, then you owe the bank the money. They come after you.
What some people do is offer you more for your (insert product name here) then ask you to transfer the rest back to the "Shipping" company.
They send you the check, you cash it, wire the money to the shipper and its gone forever...then your stuck with the bill..its not pretty but it works for these people.
Most of the checks are very good counterfeits.
Good luck and stay sharp, I wish there was a way to get back at these people.