First of all, it seems as though the forum moderators have given up on trying to police this forum, and have not touched most of the topics in here, despite the fact that they relate to the game and not the website. To remedy this, rather than moving everything, I would suggest moving the forum under the "General" tab and renaming it to something like "General Suggestions & Feedback." Then you can give some poor intern the task of combing through and sorting all of the old threads. Sounds like a great summer gig.

I would also create a new website feedback forum, but I would change the title to something like "Website Discussion," and add a notice before new threads are posted, making sure users know that this is only a forum for discussion surrounding topics related to the website, and that game feedback and suggestions will be ignored.