Implement sharing a conversation between multiple devices using XEP-0280 - Message Carbons
Submitted by Fabian Henze
Assigned to Telepathy bugs list
"This XEP defines an approach for ensuring that all of my devices get both sides of all conversations in order to avoid user confusion. As a pleasant side-effect, information about the current state of a conversation is shared between all of a user's clients that implement this protocol."
This is allows seamless switching between mobile and desktop clients during a conversation. Would be cool if telepathy-gabble would support it.