In some instances you may have content on your website that you don’t want Google to archive. Google understands this and provides various META tags for you to use in notifying their crawler in how to handle your website’s content. Two such tags are NOSNIPPET and NOARCHIVE.
The NOARCHIVE META tag is used to tell the Google crawler to not archive this page and its content. This wil stop their being a cached version of the page in the google search results.
The NOSNIPPET META tag notifies the crawler that you do not want a snippet of of the pages content to be dispalyed in search results. If you specify NOSNIPPET then the crawler will also not archive the page contents so you do not need to put both META tags in your pages.