Actually i try to solve this on pm but he didnt reply me for more than 2 months than i want to write here. Pharmacist gave me negative trust on https://bitcointalk.org/index.php?topic=1492296.0 topic 2 years ago for bidding on auction. Also as you can see OmegaStarScream first bidder and he didn't gave him  negative trust also some of bidder didnt got trust too. So from pm i request from him to remove my negative trust as kindly after 2 years. and if not i request for a reply. He didnt reply also he blocked my pm's.
Is this how to use DT? giving negative trust on same topic to some people and be blind to known people?