please tell me about dofollow and nofollow backlinks....

Dofollow links allow google (all search engines) to follow them and reach our website. Giving us link juice and a backlink. If a webmaster is linking back to you with this link both Search Engine and Humans will be able to follow you. The best way to give someone dofollow love is allowing keyword in the anchor text.

Nofollow links are links with a rel="nofollow" HTML tag applied to them. The nofollow tag tells search engines to ignore that link. Because nofollow links do not pass PageRank they likely don't impact search engine rankings

Hi Friends,
Dofollow backlinks created from high PR and high Domain Authority sources will pass on the link juices towards a hyperlinked blog. This will improve its ranking position significantly in search engines. Apart from the dofollow backlinks, nofollow links are also important. So always have a combination of nofollow and dofollow backlinks which will generate heavy traffic to your website.

A do-follow link, on the other hand, is a link that will pass on the SEO benefits of the website where it is built from to the hyperlinked site. This is the type of back links that link builders will create for SEO purposes. Back links created from high PR (and high Domain Authority) sources will pass on the link juices towards the hyperlinked blog, thereby improving its ranking position among the search engines significantly.

The do-follow backlinks are the links that google gives them a value/link juice.

Dofollow backlinks allow Google, or whatever search engine is being used, to follow them and reach your website. Basically, these are links that will pass on the SEO benefits of the website where it is built from to the hyperlinked website. ... This will improve its ranking position significantly in search engines

Dofollow is a link attribute that instructs search engine robots to crawl the website link and index it in search engines. They links help to build backlinks for your website for search engine ranking, and also helps to drive good traffic to your website.

Do follow link helps you to get link juice and domain authority of the page from where you get the link.

Dofollow backlinks allow Google, or whatever search engine is being used, to follow them and reach your website. Basically, these are links that will pass on the SEO benefits of the website where it is built from to the hyperlinked website.

Dofollow links allow google (all search engines) to follow them and reach our website. Giving us link juice and a backlink. If a webmaster is linking back to you with this link both Search Engine and Humans will be able to follow you