In this question, the OP admitted to deleting his question and then reposting it. I feel like this user has successfully "gamed" the system. His post is not technically a dupe (since he deleted the original), and it's not offensive (in content) or spam, so it's not flag-worthy.
I left a comment attempting to educate the user. But what else can be done here? I would hate to see this catch on as a way of getting more attention for your post.