Thanks Adam.
That's why I left WebMasterWorld: they try to answer without
listening. BTW I want to share some ideas, to discuss, to help others.
People are asking the same questions: "How can I restrict caching of
my page by others? What is proxy? Why I can't find "White House" using
"Failure" query? Why "Piano Lesson" does not show my page anymore?"
Of course, they do not have any time to read "Webmaster Guidelines",
and to read quite a lot of scientific papers at
http://labs.google.com/papers.html ...
Good luck!