I believe that using shoppy "Auto-Buy URLs" and refraining from using escrow is sufficient reason to get a negative trust.
The low price of accounts "especially after the merit system" is further evidence of scam.
Generally putting a negative trust will not change the concepts. the losses resulting from the purchase of accounts and the merit system will make the sale of accounts unhelpful.
I agree with you.
Someone even tried to buy one of his 'accounts' on that Shoppy link of his,
and got scammed and wrote a message thta password is not working.
I would never buy or Sell Bitcointalk account.