The newest batch of XBL group invites have been sent out. At the max I can do for today, but you can send BorderlandsGAF a friend request and I will approve it (only if you're on the list in the OP or posted in this thread).
As you join co-op games with each other using the list/group, please act maturely. I don't think anyone wants to play with lootwhores, so be fair as well. If you run into any problems with players on the list, please post it in this thread so we can deal with it. Players will be removed on a case by case basis, but generally you'll always get the boot from the first infraction. After all, there's plenty of players that will want to be in the group. Let's keep this drama free and everyone will enjoy themselves.
If you are no longer playing Borderlands (or will not be purchasing it), please remove BorderlandsGAF from your XBL friends list and request in this thread to have your name removed. Thank you.