You definetely cannot stop a scam in progress as an operator. You cannot warn the poor soul who's being scammed... Thankfully, where I work, they've implemented procedures where the person being scammed can be warned by a supervisor, MOST of the time, but these Nigerians, they're smart, and they've found a way around that now. I don't want to get into the criteria to warn a victim, because I don't want anyone who shouldn't know, to know. Know what I mean? But we do it all the time. People ARE getting warned.. thankfully, I don't have to lose my job to do it.