Details About The "NoODP/NOYDIR" meta tag

Details About The "NoODP/NOYDIR" meta tag

First of all, ODP is Open Directory Project. It’s the DMOZ, the most comprehensive human-reviewed directory of the web. You might have seen or heard webmasters talking about noodp and/or noydir meta tags in the and section of their web pages. Basically both noodp and noydir are the same things, except, noodp is used by Google and noydir is used by Yahoo. Function of both are same. What is that?



According to Matt Cutts of Google, in specific instances, if a user types in a keyword into the search, then Google may attempt to use descriptions from the open directory project (DMOZ) as the page title and meta description for organic listing. The NOODP tag allows you to opt out of the open directory project title and description override. It is same in case of Yahoo when Slurp attempts to list Yahoo! Directory page title and meta description. The NOYDIR tag allows you to opt out of the Yahoo! Directory page title and meta description override.



Usage of NOODP and NOYDIR:



* Here, we’re instructing all and every robot to obey noodp/noydir.

* Here, we’re only instructing the Googlebot to obey the rule

* Here, we’re telling only the Yahoo robot



Both of these aren’t separate tags, but are a parameter used in robots meta tag. Same as we discussed in case of NOARCHIVE parameter.