That's interesting, since I rarely, if ever, vote anything down. In fact, I will occasionally vote posts up that I know contain incorrect approaches to a solution, if the errors are already cleared up in the ensuing discussion and the post has other merit (such as raising interesting questions/considerations, or spurring discussion forward).
I also will vote posts of opinion up that I disagree with, for the same reasons. If all you are trying to take away from the community are information, assistance and answers, I think you're missing a large part of the point.
I think the biggest thing is that I try to vote posts up in context, rather than trying to treat them as isolated "nuggets of debatable value". Also, reread my original post: if you're asking a question that is neither particlularly stupid nor offtopic, what is a rationale to ever vote that question down if it never got voted up to an unreasonably high level, especially nine months after the fact?
Spud Zeppelin * spud@spudzeppelin.com