Filling the Pipes

I recently received a MMS text reply to a picture message that I sent to an email address - just saying "Thanks for the picture and the free reply was a great service and he wished his operator provided a similar service"

I think this is a nice example of filling the pipes, the message reply could be a maximum of 500 characters and sent via IP directly to the Vodafone MMS server and is designed for 100% on-net traffic.

A nice feature at nearly zero marginal cost.