It seems like the only internet protocols they didn't implement were the ones designed for chat. How could they forget about IRC, XMPP and SIP?
This is because when an account generates text in a chatroom it is generally referred to as a "bot".
These can definitely be added
Or IP over Avian Carriers or HTCPCP
Great observation
SMTP!
No SOAP, CORBA, WAP or RS232 interfaces either.