I frequent one on FB that is local to me. Had an ad up the other day where a guy said he had a buy set up for the next day but he would sell to highest bidder. So I asked him, in the open, if I offered more would he cancel the buy for the next day and sell it to me. He openly said yes he would. What an ass!!!! No I didn't have any intention of buying it but wanted everyone to know what kind of person they were dealing with.