Over the past few days, I have come across multiple posts from a particular user that are questions from ongoing contests. On both, I have commented this fact on both the question and the answer, and it seems as if this user is relatively quick to delete a question once this fact is pointed out.
However, my question is as follows: What if this keeps happening? I have clearly pointed out to this user that posting current contest problems is not okay, and it doesn't seem to be having an effect. Is there any further action that can/should be taken to prevent this user from posting such questions (one of which had a fair amount of work shown as well, which would be likely to prevent it from being closed for lack of context) in the future?