I've recently reached the 3000 rep limit for "voting to close". But, since I've joined stackoverflow just some weeks ago, I think it is actually too early and I shouldn't have this privilege. Closing a question is quite a sensitive thing for the author and it is likely possible that the author never asks anything again.
So, my point is that knowing the community for just some weeks (as in my case) does not give you enough understanding to influence other users that much.
(and, yes I just created a "false positive" by accident, when marking a question as a duplicate even though it wasn't)