Please also let us know so we can burn it's trust rating for being a bought account which, by default, is only purchased in order to deceive other forum users. This means the person operating that account is provably dishonest and so it should be marked as such.
I don't quite understand why you always think of someone negatively in that way.
Do you have trust issues or something? 
The guy may have bought the account for signature campaigning itself. It's hard to get a spot on bitmixer and they currently have one of the best price compared to other campaign so I wouldn't think deceiving others is the reason why the buyer bought the account but just to earn a spot on bitmixer. It's only my opinion tho.
On the other hand, I do think that the trust feedback should be removed since the owner of the account is different now.It coul be used in a fraud just in case.