Anyone can edit the wiki in the thread, not just the OP. It can be constantly added to and subtracted from and is PERFECT for long, ongoing threads where information changes constantly. Here's a good example of that:
That thread was started in 2010, and is still getting updated to this day.
Here is the original thread announcing the feature, back in 2007:
If you think you can manage it, I'd LOVE to hear from you.