Do-follow links are highly recommended for SEO purpose because crawler will index the links which are do-follow. Once the do-follow link is indexed, it will improve the rank of the website on search engine.
Nofollow links without SEO value. Nofollow links don't allow search engine bots to follow your links. They don't help you to boost Page Rank, website rankings and have no SEO value. It is a notice for search engine not to count a link
Do-follow links are the links which gets indexed by search engines and it makes visible on search engine. It helps in increase the value of backlinks in SEO.
Do-follow links are the links which gets indexed by search engines and it makes visible on search engine. It helps in increase the value of backlinks in SEO.