No, because there are numerous on-going threads that are years old and yet still quite active. Also, it is not unheard of for a dormant thread to be brought back to active life legitimately. It's not an easy problem to solve with automated tools.Oops! I've just reaslised, by reading through the comments, how old this thread is. It was right near the top of the list, so I thought it was recent. I didn't get the pink box because the more recent comments are - well - recent. Might it be an idea if the pink box appeared, based not on the most recent post, but on the date of the opening post?