I've got plenty of negative trust. I'll start caring when there is a valid claim and its from a member whos opinions I give a damn about. And luckily, the people who's opinions I give a damn about didn't get to where they are by giving people false trust. So it seems unless I do something wrong I'm in the clear 
And when people that other people value their opinions start to give illegitimate feedback the people who value such opinions will no longer value such opinions. *waits for Techshare to chime in with some paranoid bs that we already are*.
I have noticed that there has been a noticeable uptick in the threads complaining about unjust feedback being given/received since armis was able to successfully get TECHshare removed from default trust list.