/say or /s – Say something to anyone in your local area
/group or /party or /g or /p – Say something to members of your group
/tell [name] or /t [name] – Send a private message to another person (use quotes around names with a space.)
/reply or /r – Send a private message to the last person that sent you a private message
/shout – Shout a message to everyone in the same region
/invite [name] – Invite another person to join a group with you (no quotes needed)
/leave - Leave your current group
/kick [name] - Kick the specified person from your group (no quotes needed. You must be the group leader)
/promote [name] – Promote the specified person to be the group leader (no quotes needed. You must be the group leader)
/friend [name] – Add a player to your friends list
/league or /l - Say something to members of your league
/versus – Talk to the opposing forces (needs to be enabled in the social menu first)