However, your trust against pooya87 is equally dumb and you should remove it. Doing some kind of tit-for-tat retaliation doesn't help your case. It just looks petty.
OP - I would have commented against pooya87 but being a hypocrite does not help you.
It would actually be better for the site if it didn't exist at all. The trust system is used for many things that have nothing to do with trading. It's full of people who abuse it for their own benefit.
Terrible idea - DT has saved many a newbie - who we should protect. Use your staff position to urge change to the way DT is calculated! For example, one agreed change between the scammers and busters like myself would be to ban members from DT that have either admitted to or have been lawfully judged to have done something substantially harmful to the forum or bitcoin community. Kind of like how Tecshare was banned, but the reason obviously needs to be made public.