Not every site is in there. Plus there is a delay of 12 to 18 months for pages to show up there. Sites that don't want to be "scanned" and archived can put a robots.txt file on their site and they will be bypassed and not archived.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi