Dark Prince: Rather than "clutter" the top of the board with several names, such as you describe, the better way would be to have one post, listing all the names. Then a link directly to that post, could be placed at the top. That post could be edited at any time by Chaos. (Or whoever does the post, AND any moderator)

In each post, you see a "Link" link under the date. If Chaos copies that URL and puts it at the top of this board, telling what it is, anyone can click it and see the up to date list of people agreeing.

It's pretty simple, but if any assistance is needed, just let me know. (Or any other Global Moderator, really)