Anthony D Cennami wrote:

You aren't maintaining anybodies distributed server farm. You're maintaining the infrastructure that your clients pay you to use, and they're allowing this application to function in the manner described in plain english within the license agreement.

That's a slight stretch. However, your point about an AUP is well taken. Perhaps networks will now want to consider a prohibition along the lines of "Distribution of content by a third party via a customer's connection may be blocked at the sole discretion of the provider, or may be grounds for termination of service."