This question already has an answer here:
I've recently seen an uptick in answers to questions that will likely be closed due to
easily found in documentation, even when a comment answer has already been given and the question flagged. These answers seem to be made to get some cheap reputation points.
In one instance I gave a brief comment-answer on a question, the OP said he'd accept the answer if I gave it formally, and then I explained the question would likely be closed soon (it was). Despite this, an hour or so later someone else essentially copied my comment-answer to a formal answer.
Honestly I'm temped to down-vote such answers as spam, what is the proper approach here?