Definitely a "Getting Started" which breaks down:
1. Hardware - could cover How Many WoW clients per machine, ranging from CPU, Video, and RAM.

Then to actually go to a "Working Solutions to Multi-Box"

1. Hardware Solution - covers Xkeys, Wireless Mouse, etc. There's a lot of good links found here in this forum.

2. Software - covers KeyClone, Autohokey, Octopus, etc. I'd let the authors of those software maintain this part in the wiki.

Then to character creations - "Defining Goal" topics
1. PvE - list various combinations. Each section can have "Class" broken down by Roles (tank, healer, dps) with their respective link to Talent Specs already in other wiki pages.

2. PvP - list various team combos.

Another section I can think of is "Levelling as multi-box"

1. Topics that cover Normal play, Quest Play, other links to Guides, even free guide, guides without collection.

2. Topic about power-levelling with a higher level + lowbies. Aoe Grinds. What instances.

Another topic is "Level 70 & Gearing your Team"

1. Perhaps add "trade skills" for multi-boxers if they choose.

2. Other possible gearing up strategy with the upcoming 2.4.

3. What instances are do-able. Heroics.

Then add the info about where to find other Multi-Boxer.

1. What servers, alliance / horde. US / EU.

2. Other games where Multi-Box is possible. DaoC, etc.