·Time Warner Cable
Watchout for corprorate applications that are driven to be chatty and drive up the use of data (and revenue).
SMS was like this - effectively charging (gouging) a ton of money for what is effectively almost free.
Carriers will 'switch' from what is SMS to a data based equivalent that uses data to be able to charge you even more. MS Live Communicator is a VERY chatty tool, keeping status updates, etc in near real time.