In recent years there have been several well publicized cases around the US of sellers on Craig's List being robbed or even killed by people posing as buyers. Most Craig's List transactions are local, while transactions on Gunbroker, GunsAmerica, Guns International, etc are usually not local; and simply being separated by distance might provide some protection. Nonetheless, Gunbroker and some other on-line gun sites clearly display the seller's home town. In the worst case scenario, a criminal could peruse Gunbroker or other sites looking for sellers in the criminal's local area. The criminal could enter a winning bid, and would then receive the seller's address for sending payment. If the address is a residence (you can look up addresses on various on-line map services), the criminal could show up at that address expecting to find a truck load of guns for the taking. Is anyone aware that this sort of event has ever occurred? Speculating about this has caused me to think that I should get a P.O. box or the like if I ever do any sort of on-line selling, whether guns or not.