Here's a list of Global channels currently being used on Paragon Chat. Reply to this post and I'll update the list with any new ones you may know about.
To join a global channel type /chan_join Name so it would look like /chan_join Roleplay
Paragon Chat - Everyone is in this
Server Channels
Virtue RP - Find all your old Virtue roleplaying friends here.
Infinity - Find your old pals from the former Infinity server.
Liberty - Former Liberty Server players.
Virtue - For all your catgirl needs.
Victory - Former Victory heroes and villains.
Protector - Home of former Protectorites.
UnionOOC - Out of Character channel for Union roleplayers.
Guardian - Home of former Guardian players.
Champion United - They are the Champions my friend.
Justice - It's Just us friends here. (Forgive my pun)
Roleplay
Roleplay - For all your Paragon Chat RPing needs.
UnionOOC - Out of Character channel for Union roleplayers.
Virtue RP - Find all your old Virtue roleplaying friends here.
Friends, Families, and Supergroups
Shield of Paragon - Former members of the Shield of Paragon SG coalition from Virtue made up of supergroups; The Silver Guard, The Reciprocators, They Might Be Heroes, Futura Force, Children of Egypt , The Dawn Patrol, Alliance Arms, Guardian Angels
robokitty - Friends of RoboKiTTY from Virtue.
Brickhouse - Group of friends from Virtue
Tesscomm - For people who were members, friends or Role-played with a member of the Tesseract Castle SG. Channel is semi in character, semi out of character.
Golden Age Heroes - For anyone that was a member or ally of the Gods of the Golden Age and Young Gods of the Golden Age supergroups. Server not specified.