I do this myself, great idea to do so.

Now I have to say, even though I don't have negative trust from a DT member, I just had my trust score thrown in my fucking face a few hours ago while trying to sell some bitcoin.  I refused to send the bitcoin first, and the dude says he's got better trust than me and blah blah blah.  So having a lot of untrusted negatives does have an effect if you're trying to do deals.  Other than that, this is just a chat forum with a feedback system that allows anyone to neg anyone else, and overall it should be a very small part of anyone's life and shouldn't be a cause for ear-smoking.  Kiklo went off the deep end, just like mixan did.  I'm not surprised he got banned.