No follow is a link attribute that instructs search engine crawlers not to crawl the link. These links are hence not indexed in search engines. They are only helpful to generate traffic from various sources.

No follow link can't boost your keyword's ranking.
But, you need to add some no follow link for backlink.
Just mix it with do follow link.

No follow are those links which google are not able to be crawl and this type of links have relation no follow in their HTML tags this are seems useless in SEO however no follow links of powerfull authority website are sometime usefull like wikipedia etc.

Nofollow(HTML Tags) provides a way for webmasters to tell search engines "Don't follow links on this page" or "Don't follow this specific link."

A link which is not follow by google bot is called no follow link. Visitor can only viewing that link. you can improve traffic by that link.

Nofollow is an HTML attribute value used to instruct search engines bots that a hyperlink should not influence the link target's ranking in the search engine's index.

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No follow is a link attribute that instructs search engine crawlers not to crawl the link. These links are hence not indexed in search engines. They are only helpful to generate traffic from various sources.

Nofollow is an HTML attribute value used to instruct search engines bots that a hyperlink should not influence the link target's ranking in the search engine's index.

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