Its sign for search engine whether it should consider link to share page popularity index. Do Follow : It means share page popularity to linking page. No Follow : It means dont share page popularity to linking page. For SEO purpose, Do follow does matter. No Follow links are not used to get higher Page Rank.
Do follow is a html attribute (rel="dofollow") which instructs search engine that website is sharing PR juice to external websites which connect with PR giving website by anchor text or simple web address. No follow is just opposite to do follow
Do follows are the absence of nofollow tags, and followed by search engines and they also provide link juice.
Do follow means search engine will crawl and give value to your link but no follow means search engine crawl this link but not give value. For ranking purpose no follow is not so good.
easily said, dofollow: it will get linking/sharing to another page. nofollow reversely(don't sharing/linking)
Do not over-relations of these, in fact, we can see a lot of backlink in the Google tools with nofollower
Do follow means, when u got any backlinks from another site and gives do follow link, means ur link crawled by google and if no follow then it is not crawled by google.
DoFollow links are links which help you improve your search engine ranking results. NoFollow it is an attribute which can assign to a link that will tell Google not to follow the link.
Dofollow concepts is very important to understand when you try to build good links to your site to increase your search engine links rankings.Dofollow are able to send their PR to other sites.
Both of these are tags on the website. It depends on the website whether the website place a link in do follow tag or no follow tag. Do follow gives the link juice to the website that is linking while no follow tag does not give link juice to other websites.
No-follow attribute allows you to create a link that works just like any other one, but it is not considered in the search algorithm. In other words a nofollow link does not send out link juice and the anchor text used in it does not help the page you are pointing to rank higher. Do follow links on the other hand are regular links. Article Source: http://EzineArticles.com/5953933
Hi ankita, webmaster have the facilities to keep this methods. If you keep in do follow for any web page, search engines will visit those pages and crawl the data from those pages. If webmaster keeps no follow, search engines wont crawl the data from the particular pages.