Forum OpenACS Q&A: Response to Search Engine cloaking / IP delivery
Bob, But Google caches pages, so Google will contain the content that you want to restrict to your members, and non-members can see it for free.
This is not true. IF they are not a member, they are redirected to another page. In other words, If you go to the same URL, there are three DIFFERENT pages seen: Visitor/no cookie, Guest,with cookie, Member, with cookie. These are dynamic pages requiring a database lookup.
Spiders don't have a cookie, they are "Visitors" and would see the intro content or the page that lets them register as a Guest or Member.