Current consensus is that one should downvote answers to off-topic questions.
Some users have learned about this the hardway and give answers to trivial questions in the comments. What should we do about such comments?
E.g.: Should such comments be deleted? (Via flagging specifying the reason in the "other" category, and mod intervention.) Or should I merely strike up conversation (for the fifth time with the same user) in the comments, asking him not to answer off-topic questions?