What is SEO?

Search engine optimization (SEO) is the process of improving the visibility of a website or a web page in search engines via the "natural" or un-paid ("organic" or "algorithmic") search results. Other forms of search engine marketing (SEM) target paid listings. In general, the earlier (or higher on the page), and more frequently a site appears in the search results list, the more visitors it will receive from the search engine. SEO Delhi may target different kinds of search, including image search, local search, video search and industry-specific vertical search engines. This gives a website web presence.

No Follow Meta Tag, Robots No Index, No Follow

The tag provides metadata (data about data) about the HTML document. Metadata will not be displayed on the page, but search engine robots can read it.
The noindex HTML meta tag advises spiders / search engine robots to avoid indexing a Web page.
NoIndex NoFollow means that search engine robots will not index (NOINDEX) or follow (NOFOLLOW) the links on that page.
Many seo specialist use this for their enternal page not to to indexed by the search engines.
Example of a NoFollow Tag