<META name revisit-after>

Description:

This was a very important tag as it tells the search engine how often to spider your page. Generally you should set this to between 30 days and one year.

Note: due to abuse by search engine spammers, this particular tag is generally ignored by search engines. It doesn't hurt to include it on your page, but it probably no longer does any good either.

Attributes:

<meta name="Revisit-After" content="text">
	Text is a string such as 45 days which tells the spider how often to visit the page.

Examples:

<meta name="revisit-after" content="20 Days">

Revisit the page every 20 days.