Site Owners often detest the fact that google caches an old copy of their site and displays it on searches which brings up the site pages.

A simple way to prevent robots (including Google, Yahoo etc.) from caching your site contents is to include the following within the head section of your web page.

To prevent just Google use:

To prevent MSN Bot use:

Note: MSN Bot do not indicate support for noarchive tag with the generic name ROBOTS (unlike Yahoo & Google).