What is Do follow?
DoFollow is simply an internet slang term given to web pages or sites that are not utilizing "NoFollow." NoFollow is a hyperlink value that tells search engines not to pass on any credibility or influence to an outbound link. Originally created to help the blogging community reduce the number of inserted links into a "comment" area of a blog page, the attribute is typically standard in blog comments. It helps overwhelmed webmasters disallow spammers from gaining any kind of advantage by inserting an unwanted link on a popular page.
How DoFollow & NoFollow Have Affected Link Building?
If you want your site to rank high in search engines one of the things you need to do is to build backlinks to your website. We often hear in the context of link building about do follow and no follow backlinks. Prior to going further we must understand what do follow and no follow tag means because they have a big influence over your search engine placements.
As a result of the implementation of NoFollow, the process of building links has taken a steep turn. Many sites, including wikis, social bookmarking sites, corporate and private blogs, commenting plug-ins and many other venues and applets across the internet began implementing NoFollow. This made effective link building difficult for both honest people and spammers alike.
It also made DoFollow links become the “Holy Grail” of SEOs everywhere, who seek them out as expensive collections to their off-site optimization repertoire.The do-follow or no-follow tag is chosen by the website owner or the blogger. You can see below the regular syntax for an HTML link:
1. HTML tag for reference - <a href=
2. URL to your page -Your URL
3. Your anchor text -
4. Closing tag – </a>
2. URL to your page -Your URL
3. Your anchor text -
4. Closing tag – </a>
If you don’t want spiders to crawl the link from your site, you have to use a no-follow tag in it as it follows:
<a href=”your URL” rel=”nofollow”>Your anchor text</a>
<a href=”your URL” rel=”nofollow”>Your anchor text</a>
NoFollow
There's nothing wrong with getting No Follow links. In fact, you'll want to get an equal amount of them as well. While they don't pass on link juice, they do help associate your site with anchor text (the keyword phrase that makes up the URL pointing to your site). They also increase the exposure of your site, overall, which may eventually lead to you getting more mentions via Do Follow links!
There's nothing wrong with getting No Follow links. In fact, you'll want to get an equal amount of them as well. While they don't pass on link juice, they do help associate your site with anchor text (the keyword phrase that makes up the URL pointing to your site). They also increase the exposure of your site, overall, which may eventually lead to you getting more mentions via Do Follow links! 
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