Due probably to the policy rule "if you downvote, please explain", I find that downvoted or trivial questions in the site are actually answered in the comments to the question!
The problem is the contrary to " Pseudo-answers are the enemy ". Real answers should be answers, no comments. But on other hand, it is arguable that a person actually wanting to downvote a question and suggest the OP to delete it, does not want to give an answer.
Also in some cases I find that people just answer in comments just because they think their answer is too short or too humble.
EDIT: So my questions are:
Do you find that answers in comments are a problem? If so, what measures should be taken to discourage that kind of answers?