This elaborates on a comment I made on David Speyer's meta post.
Someone posted at least one problem from this year's PROMYS application on MO--without labeling it as such, of course. One concerned trains traveling at different speeds on a single track. After Speyer's post, the problem was removed, understandably. I was one of at least two people who posted answers to that question; those actions and the resulting reputation points seem to have disappeared from the system.
Now that the application deadline has passed (15 March), can we consider reinstating the question and answers? While the person posing the question violated MO rules, the question is engaging, we who posted answers were acting in good faith, and the answers attracted some interest.