I vote for personal responsibility!
If I enter a totaly unsecured transaction it is my choice and my responsibility if things go t*ts up on me.
I did have one swap that seemed to go bad with me sending off my goods to a site member and nothing arriving. The fellow who was sending me the goods claimed that they had been sent and I put it down to the good old PO stuffing us all again.
Next thing I know REPLACEMENT goods come through the door.
The other guy had taken the responsibility to make sure that the swap went well, despite the PO, and was happier to be out of pocket than seem to be a bad swapster.
Full marks to him - and I would hope that other swappsters would take this line.
If a swap does go bad on you (and how rare is that) I hope people would shrug it off and take the responsibility to then warn others, so the ratfink does not have the oportunity to repeat the rippoff!
If the culprit can be found and the errors of their ways pointed out to them in a calm, loving and peacable way then some much the better.
Especially if you have learned how to be calm, loving and peacable when taking personal responsibility for kicking seven shades of manure out of a piece of thieving slime!