bbPress.org

When you go into the wp forums admin, you can select each forum individually. On the right side of the edit screen is an ‘order’ field. Simply type in the order # where you want the forum or sub-forum to display. Start with 0 or 1, for the first forum, and then edit each other forums order increasing it by 1.

Instead of a straightforward order alphabetically we are given complete control of the forum display order using a system like this.