I'm guessing there must be a reason for this but I was wondering why we don't get any points for comments?
As much as I get the idea that an answer should be enough to fix the problem while comments will more often be requesting further information to provide a solution, I've lost count of instances where the question is not complete and therefore a proper answer cannot be given, and a person asks a question which is responded to which then allows the question to be answered.
In those kind of instances the person with the (question in the) comment probably knows what the problem is and is trying to steer the discussion that way, but cannot provide their proposed solution until the situation is clarified, and by then someone else can jump on and provide an actual answer before the person who cleared the situation up.
That got me thinking should +1'ed comments maybe worth 1 point or something? (as well as loosing for -1's obviously).
Edit: What got me thinking about this was an "answer" I left yesterday which with hindsight quite probably should have been a comment but I wasn't 100% so decided I may as well put it as an answer as comments don't get points.