Leaving a negative trust rating is often used punitively, or as an instrument of blackmail. Tysat did not suggest he did not to trust me, he promised a negative trust rating.
But this is veering into unconstructive territory. All i want to learn is the potential negative repercussions of my business.
Possible reprocussions being, you sell trust to scammers who are then able to more easily take advantage of newer members who don't understand the trust system quite as well, more than likely being labled a scammer yourself for doing it, and a lot of hate from the community.
As the trust system is completely unmoderated, if you are asking if you will be banned, I'd guess no. However whoever decided to add trust to you would be immediately pressured to remove you, so like others said, I don't think it would last long, nor would it be a profitable business venture.
In short, and in my opinion, probably not a good idea.