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I dont trust you and I dont trust your negative ratings.
You dont have to.
#1 You can try to solve the issue with Lauda directly.
#2 You can try to solve the issue with the person that put Lauda on DT. I assume after your "escalation" remark earlier you already know who that is.
#3 You can remove Lauda from your personal trust network (by adding ~Lauda to your list) and maybe convince others to do the same.
I think other staff members needs to step up and stop it or other ppl think its okey to abuse systems. Its simple as that.
Staff does not get involved in trust ratings. Feel free to take a look at the untrusted section of my trust page for some examples that are perfecly fine with the current system. Granted, no one gives a damn about these ratings, but an admin would not remove them either. Not even if they were considered trusted.
If we want to have a nice forum and clean from spam and scammers it have to start from the top!
You can never entirely remove these. Spam is what the moderation team is here to handle, avoiding scamers is your personal responsibility. No amount of ratings from DT can change that.