I will be tagging Vod for this obvious case of trust abuse, further I will be tagging DarkStar_ for not using his DT2 power properly and for giving out positive trust for absolutely no reason.
EDIT: tagged both Vod and DarkStar_ for making a personal tool out of the trust system.
Once again:
It's entirely legitimate to give someone a new positive rating just to negate a negative rating. (In this case you should explicitly respond to the negative rating you're negating.)