I just tripped over a beta site from RealNetworks who are apparently about to launch a "subscription network content
community" service, that appears to be kinda like a ASP service for content owners wanting to sell subscriptions online. I guess they are throwing their hat in the we-sell tech/service ring which will be a relief to some people looking for a solution.

The main problem I see is that the teeny publishers who are hoping for something like this will never pay a price tag worth
servicing them. The bigger publishers will either build it in-house or suffer through countless committee meetings to make a
vendor decision. That's life in the ASP business.

http://www.contentcommunity.com/content.asp?CID=132364