I was reading about robots.txt & understanding why it is used for crawling websites to search engines. But I want to know about "NOODP" tag. Why we can use this and how? What's it's benefit we can get from this tag? I have seen on so many website's source code. It's looks like this in head section
<meta name="robots" content="NOODP" />
So I want to know all about this tag. Anyone can help who understands it better. Thanks.