What about a help box that contains help written by the creator of the thread that supplies you the needed information to write a comment (in the WEPR forum-news links, in the forum games-the rules to the game, ect.) and that follows you around the thread never mind what page of it you are.
but once you leave the first page, you can't see that message any more.
Never stopped anyone from replying. Neither have 100 pages of a discussion ending with "Let's agree to disagree and move on to..." ever stopped someone from posting something relating to the topic left (while unrelated to the discussion because they haven't read any posts in the thread) two posts down from the "Please stop" one. /Ttly unrelated, just felt like it.
I'm with Cormyn, though. It is overly complicated and people don't really care that much anyway (if they did, they would read the first post).
If you've been keeping up with the argument after a little while the OP becomes irrelevant anyways, and therefore this would be a lot of work for very little reward.