Mabsark negative trusting exclusively rivals does look as serving his own interest.
CanaryInTheMine is active and have taken action by removing der_troll and putting a new trust on Mabsark. Now the responsibility lies with him. If it feels to the other trusted members or Theymos that Mabsark is abusing his privilege then CanaryInTheMine will be held responsible and would likely lose his status.
I think the trust system works fine, would like to monitor this and see how it ends.
Everyone serves their own interests. That doesn't mean they can't serve the interests of others as well though. Stopping scams before they can rip people off is in the best interests of the whole community I'd say. Wouldn't you? Those companies I left negative feedback on are not rivals. They're scams. If they're not scams, then they'd be able to provide some form of evidence of legitimacy. They've been asked many times by many people and simply refuse to do so. If they do so, I will remove the feedback like I said. AMHashs's rivals are CEX.io, Hashnest, KNC Cloud and PetaMine. Do you see me leaving any negative feedback for those services?