I came across this question today -- it's a duplicate and already has an answer. But because new users rarely view duplicate questions to find the solution to their problem, the answerer copied one of his previous answers and posted it as Community Wiki. I assume he was trying to help the OP by posting the answer.
Quoting his comment:
Because the question-askers rarely, if ever, bother to view the duplicate questions to find their solution. So I post it here for their reference. I make it CW because I don't deserve any rep for it. Not that it matters since these questions are eventually deleted (as they should be)
After reading the Dr. StrangeDupe blog post, I'm a little bit confused. The answerer was not repwhoring (hence made it CW) and clearly had the intention of helping the user. This answer (if not deleted) might help new users who search for a slightly different search-term.
Should such answers be encouraged? What should be done in such cases (other than voting to close as duplicate)?