it doesn't appear that Mabsark is abusing his trust. Highly respected members of the forum have looked at this issue and provided their opinions on a different thread. If this isn't the case and it can shown and agreed by mods that he is abusing then go ahead and show that. I haven't seen abuse in this case. What I have seen is potential scammers getting pissed that they got stopped dead in their tracks.
It appears that Mabsark is abusing the trust system, but you ended up leaving his positive trust and adding someone to your trust list who previously gave him positive trust.
Having a large trust list does not do anything to stop scams unless they are actually able to use good judgment in spotting potential scams. Even if you were to ignore this fact, the majority of the people on your trust list have only given feedback to you, if anyone.
The result of your trust list is that you have what is essentially a circle of people who have given positive feedback to each-other who all appear to make themselves look trustworthy when they probably are not. This results in people being able to scam by having a somewhat legitimate reason to avoid using escrow for potential deals.
A large trust list also makes it very easy to "cry" scam in order to strong-arm someone to do what they want. Even if people are not abusing the trust system it will result in a lot of false scam reports when someone does not understand how to use the trust system.
The people who share the opinions all have their interests aligned as they are all promoting AM1 on havelock, likely are all shareholders of AM1 (many have admitting to being so). They are also promoting their message almost in unison making it appear they are being controlled by one or few people.
He is also forcing the companies that he gave negative trust to prove they are not scamming, this deprives them of due process as due process requires that the aggressor provide evidence against the person they claim to have broken some rule. In other words it is up to Mabsark to give evidence that the companies are scamming or are trying to scam.
I have also not seen very many people on your trust list (if any) stop scams in their tracks.