In the fanedits.com wiki you can add a link to the OT.com forums for the edit, but in the ot.com forums there's no automated system to link back, unless it's part of the first post or a person's signature.

Two ways which this could be accomplished is to in the first post have an option to 'link to wiki' and at that point when viewing in the overall forum, a 'wiki' button would show up in the area where there are 'locked', 'stickie' etc. and that would link to the wiki document.

Then when viewing the actual thread this same wiki button would show up after the page count numbers. or maybe to the right of the 'reply thru print' options.

If this makes sense, then the task would be to carry this through the existing ones.