I believe OP is referring to exchange (or rather giving away) of goods and services with the intention to bump up own trust.
If it was to judge by your recent threads in games and rounds section, i believe that is what your intentions are.
-snip-
True. I left a feedback(actually two) and he is asking about it. I think it is fine. Anyway, I will change it to neutral if I see he isn't doing anything shady.
but i will not remove the negative trust of mine from your account
you are giving free escrow services its k but you are also covering the fee i think its just to build reputation i think there is a big risk of a big scam from you and you are just building trust here People will easily leave trusted feedback on your account with this.