What are ‘NOODP’ and ‘NOYDIR’ Meta Tags and why they are used?
What are ‘NOODP’ and ‘NOYDIR’ Meta Tags and why they are used?
Meta Name NOODP is used to to tell search engines not pick description and Title from your listing at dmoz.org This meta will be written as <meta name=”robots” content=”noodp”>.
And Same for NOYDR is to tell robots not pick snippets from Yahoo directory and tag is
<META NAME="ROBOTS" CONTENT="NOYDIR>
You can combine both as
<META NAME="ROBOTS" CONTENT="NOYDIR,NOODP">.
This meta tag is designed particularly to prevent search engines from displaying the Yahoo directory page title and meta description. Meta Robots tags are used to ensure that the right content is displayed in the page description in SERP.