Since we have no control over other people's money, we can only offer very limited support such scams. Officially we don't support them, but we will still handle the cases where possible, because we're not going to encourage it either. If you get scammed, we can't do anything to help you unless you can show us all the evidence right from the start where you agreed to the trade.
If you're going to send money to other users be sensible and check them out first. Make sure they haven't scammed in the past and make sure they have what they're offering.
The more you do to prevent yourself from getting scammed the easier it is for TSA to help you if you do get scammed.