If it's a private deal, I can take nunya as an answer, but they did make the feedback public, so.
Mexxer-2 owes me money. How much, since when and other details of that debt are not relevant.
I did neither create a scam accusation, nor do I plan to. I left a feedback of my own, and that's enough. I don't want/need others to tag mexxer-2 too.
If you trust me/my word, take my feedback as a warning and avoid lending money to mexxer-2 or opening up yourself in any deal (-> use escrow).
If you do not trust me or my feedbacks, feel free to ignore it and carry on as usual.
Your call.