This question already has an answer here:
Recently I've seen a couple of questions (across various SE sites) that I could answer, upon reading the question & comments I've found that it's been answered as a comment but there's no actual answer.
Is it ok for me to provide an answer that mostly consists of some-one else's comment?
(I'd try to improve on the comment by expanding on it or providing examples, give attribution to the original commenter & wait a few days before doing so.)
I dislike the idea of "stealing" someone else's rep, but I also feel every good question should have an answer (ideally accepted), since this improves the question for future users.
Are there any rules/recommended practices for doing this, or should I even be doing this?