This wiki updates for any shift code release, as far as I know. Maybe if I create a new topic with better wording it might actually become sticky material. Either way, I saw a lot less new topics spring up so at least it helped a handful of people.
I def think linking to a page that constantly updates shift codes would be awesome to sticky. The fact that it can be edited by readers makes it useful and helps keep it current. Had I known there was such a demand for it I'd have reworded the title a little better, but it is nice to know that it helped you guys.