Does it mean that PM’s (Private Message) are not entirely private (aside from the note that pops up about moderators access)?
Your question makes no sense, and you should probably read the OP again. Or just try it

The tool makes sense when you make trades, but I usually use an escrow so the problems are just the escrow's (looool)
among other things in certain community contexts I also offer myself as an escrow
I understand that it could be a low cost alternative system, since we do not "pay you" for the service, very useful tool therefore for sure