Thanks, Crucifer. You're right about the irritating poster having disappeared - I think the worry was that he might, as in the past, reappear! I agree that the recent Listener threads are perfectly fine and I'm quite happy to drop the 'May Contain Answers' thread. The EV and Inquisitor threads don't seem to have had the problem of answers being given (unprompted), the theme disclosed (unprompted) and a link given to the complete solution. Those things are what caused the need, initially, for a 'May Contain...' thread.