Besides the keyword and description meta tags being the most important ones, there are some meta tags that are proprietary to Google’s own Googlebot. According to Google, the  tags that would apply specifically to Google’s Googlebot are the ones that have name="googlebot" in the meta tag.

There are many reasons not to have a Search Engine cache a page. If it is copyrighted, if it contains private information that you do not want displayed from a search engine, or for any other reason you do not want the page crawled by a search engine, you can add the following code to the meta tags of a page and it will keep the page from being indexed:

<META NAME="ROBOTS" CONTENT="NOINDEX, NOFOLLOW">

If you would like specifically to keep Google from indexing the page, but allow other Search Engines to index it, you can place the following meta tags in your headers of the page: