Ok here is my take. I like the feature. Its not even an agree or disagree thing. If someone has a well reasoned, well written post that I disagree with, I might still want to + them. At the same time I could agree with the substance of someones post, but it could be so horribly written that I'd want to give it a minus. I greatly prefer this to typing out a post that says this post rocks or this post sucks. For me, I'm rating the post, not the person who made the post. Perhaps the the feature could be set so only mods/admins can see someone's overall vote total.