One nice thing about modern search engines is that these allow users access to cached pages. These are old version pages that reside -often precompressed- in a specific section of their architecture.
Unless the owner or administrator of a site instructs search engines (via metadata or a robot text file) not to cache a document(s) old versions will be available to the end users via the cache command or via a cache link next to a search result.
This feature comes handy for those that use search engines for intelligence purposes. A lot of useful information can be found by searching for cached documents. At the same times old glorious pages can be become unwanted.
Ask San Diego State University’s Marketing and Communication Department. Out of embarrassment, they just removed the document listed at http://advancement.sdsu.edu/marcomm/features/2006/compact.html in which they feature a role model student (Kenneth Ciaccio), which yesterday was arrested on charges in connection with an on campus drug bust operation.
The page is still showing up in Google’s cache and reflects bad on SDSU and its Compact for Success program. To access this in Google just do a search and click the cache link or enter in the query box cache:url where url is the address of the above document.