Improper to discard the right internet protocol for chat (6)
I believe the answer is:
gossip
'chat' is the definition.
(gossip is a kind of chat)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for gossip that I've seen before include "Scandalmonger" , "gas" , "Blatherskite" , "Casual inaccurate talk about others" , "female friend at a birth" .)