that would take a message from a source and redistribute it to any number of other messagig systems (SMS, twitter, etc.) This part of your idea is great. But I think by thinking of it as a distribution method for offers/discount/publicity is just meh... Think of application of this idea in areas such as pinging someone on different channels or someone getting a choice of what media they want to receive alert on about…
You're right. I thought of PR stuff primarily because that's the need that I have to cover for the project I am working on, but the idea can be implemented in any number of aplications, not just promotional stuff...