NOYDIR: No Yahoo directory description

As I mentioned yesterday, there is a possibility to prevent Google from using the ODP description - and this also works for Yahoo! search results. But sometimes this is not the only source where Yahoo! gets it’s (editorial) SERP snippets from: In many cases they’re using their descriptions from the Yahoo! directory. So its kind of a consistent further development to support a tag (value) which prevents Yahoo! from doing so. Like the “noodp” it’s again the meta robots tag which can be used – the correct value is called “noydir”:

<meta name=”robots” content=”noydir” />

Of course values can be combined according the meta tag specifications. A few examples on that:

• <meta name=”robots” content=”noindex,follow,noydir” />
• <meta name=”robots” content=”index,follow,noydir” />
• <meta name=”robots” content=”noindex,follow,noydir,noodp” />

Default values are:

• noindex: Robots must not index this page
• nofollow: Robots are not allow to follow links extracted from this single page.
• index: Robots are allowed to include this single page into their search index.
• follow: Robots are allowed to follow all links from this single page.

Please note: “none” is a the same like “noindex,nofollow” and “all” is equivalent to “index,follow”.