Doesn't the site advise you when you comment that comments were supposed to be for asking clarification or suggesting edits, Not for giving answers? People often use them to give half-hearted answers and I've had that urge too but written a formal half-hearted answer instead. It wouldn't get upvoted or accepted but if you feel you've got something helpful to say, why not say it as an answer?

I think people are afraid to put their half-hearted answers as formal answers because they can get downvoted for being incomplete. But if you don't care about points like Gregg (and myself), then it doesn't matter.

Comments like his "this site might be helpful" are annoying. You have no idea if the writer even understood your question and whether spending time digging through that site will actually help or not. They shouldn't post that. You can google for general information/tutorial sites.