Google to Add 'Unavailable After' META Tag
The director of crawl systems at Google, Dan Crow is releasing a new META tag named "unavailable_after".
Easily understood from the name, the "unavailable_after" tag will tell Google when Googlebot should no longer crawl that page. It is especially useful for limited time offer promotional pages where the promotions will expire on a specific date. By using the "unavailable_after" tag, you can tell Google not to crawl these pages, after the promotions expire.
[Via Search Engine Land]
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