[Dragonthorne]

There were many exploits with dropping of coin. Most notably would be the firepot exploit in EC. You would not get any confirmation asking you if you wanted to drop the money.

Scammer would sit on the firepot and auction something. Buyer would come up and try to hand money but with the firepot, the money wouldn't be traded. Money would instead drop under the fireport in which the scammer would either pick it up himself or have a spotter do it.