Patch 5.4.7 is going to add some changes to BNet communication channels. I know JAMBA doesn't use BNet communication channels, but perhaps it's something to be aware of that could be useful moving forward (cross-realm)? No idea, just thought I'd throw it out there.

We want to give User Interface Add-On authors a heads up about a change in upcoming patch 5.4.7 (release date: TBD).

In patch 5.4.7, BattleTag™ or Real ID friends will only be able to send 10 chat messages every 10 seconds over Battle.net® chat. We’re adding a new way for User Interface Add-Ons to send communications information via a new send function and receive event.

Send function:
  • BNSendGameData (presenceID, addonPrefix, message)

  • Prefix must be <= 16 bytes and cannot include a colon.
  • The message should be <= 238 bytes. This is 255 bytes minus the 16 byte prefix and an added colon separator.
​
Receive event:
BN_CHAT_MSG_ADDON - prefix, text, “WHISPER”, senderToonID

http://us.battle.net/wow/en/forum/topic/11437004031