Right now if a post has a high rating it's unclear if people actually agree with it/think it's true or just find it useful/interesting, and similarly for low ratings.

Personally, I use comments to specify. I notice that a lot of other people do not, and wonder if I'm violating a social more against relatively informationless comments by doing it (although I've gotten upvoted for it).

I agree with the problem, though. I can't tell if the upvotes on this are meant to give me the confirmation I'm asking for, or join in the asking.