Anyone can join.
Friendships are forged over this crazy program, this I know.
Simply, make a topic to be your presentation "Office".
Once you've done that, just post your links up when you've got one open. Remember to add "Closed" to the post once you've ended the meeting.
A Join.Me Guild of Friendlyness
A place to advertise your Join.Me shows.
Tags: Join.me, Crazy, Friendly, Open