If you're one of us Mac users playing in the World of Warcraft (WoW) beta, consider joining the Reservoir DogCows Guild. The only requirements are that you're not some L337 dude, you can type in complete sentences, and you use a Mac. We're about 50-strong now, and we help each other out with trade skill materials, weapons, armor, and more. Most of us are MacNN users as well.
If you're interested, the guild web site is:
http://www.dogcows.net/
If you'd like to join, post to the forum, or send an in-game message to Thalduin and ask for entry.
I should mention that we're an Alliance guild on PvE and a Horde guild on PvP. The PvE guild is by far the more active of the two.