JD Lasica and Glenn Fleishman both raised some of the privacy and copyright issues that get attached to projects like the Internet Archives' Wayback Machine. Along with the new security issue of "sensitive" information now removed from sites after 9/11, being cached.

I've wondered about the same things thinking about Google's and the Internet Archive's caching system.

Internet Archive's Copyright Policy and Google's page removal FAQ.
8:41:28 AM