You just did. (Kidding).
I'm looking into it now, will have a more detailed answer shortly. But, yes. You should.
You can do that through flagging. Click 'Flag' -> 'other', and then a reason why you're flagging the question.
You can also flag comments individually.
Comments on questions should really fall into one of two categories:
- I need more information to help solve your problem
- I have information that is useful to your immediate problem, but is not an answer. Like, 'Hey, did you try fooing the bar?'
Comments left that don't fall into one of those two categories risk being purged at any time.
Try not to get into flame wars in comments. Much like arguing on the internet, no one learns anything, and everyone comes out angrier than they went in.