The Internet Cache Protocol. Cache Busters [no- store]
under HTTP 1.1, "no-store" is
the only option available for those who want to control the
dissemination of their intellectual property. Under the current Web
caching scheme, the author has no protection against copyright
infringement at all.
"The solution to the problem is the engagement of people who are
sensitive to intellectual property issues, not just those interested in
improving network efficiency, in a complete overhaul of the Internet
Caching Protocol."