"Not an answer" answers are often quickly flagged for mods to deal with, and that works fine.
The "trusted user" privilege appears to exist largely to alleviate some of the load from the mods, by allowing users to vote on more things, for example deleting answers because they are "not answers".
Currently, besides the mods, there's only two users with this privilege though. My guess is, this means we can't actually use the vote system, yet, for this purpose.
So does me using it make any sense?