This is, unfortunately, the schema I often see. There is some question which quickly becomes very popular because of an interesting title or an interesting problem, however usually an easy one. Almost immediately there appear a few answers, which are posted independently, providing sometimes different, sometimes similar solutions (Fastest Gun in the West Problem). The question is popular and gets upvoted, and the answers also.
And here's the problem. Here comes the user, usually low-rep, and posts his own answer. Well, not exactly his own – it's an exact copy of an existing one, sometimes minimally improved – which should be an edit anyway.
I downvote such answers, but I don't think it's enough. If they are posted on purpose to farm reputation, the aim of the answerer is still fulfilled if there's more than 1 upvote for every 4 downvotes.
But I don't see the
flag as duplicate answer option. So I'm confused: should I choose the
requires moderator attention - other option every time, or should I use a bigger gun, flagging the answer as
spam? The last seems to me as a bit too harsh, but AFAIK the spam flags are automatically processed, and the
requires moderator attention flag requires the human to interact, and the review queues are overfilled.
Which of those flag options is more appropriate?