Because of caching headaches when using users and Document Groups I would like to see a way of "randomizing" the document alias so that the displayed URL changes each time a document is served. That way, it provides a degree of security for documents that I want to display. In other words, it prevents people from bookmarking these pages. Is that possible?
I guess you can use the no-cache meta tag for specific pages to prevent caching in ISPs cache servers.
Though if you are talking about webusers protected pages, these pages wont appear to non-logged in users and to prevent the cache of such pages you can turn "cacheable" switch off in page properties.