Dofollow links are links that pass Google page rank. This means that the link has a markup that tells Google to follow the link to the website it points to. So if you have a dofollow link to your website on a social media website, then Google will see the link and this will help to increase your SERP (Search Engine Results Page).
Nofollow links are much the opposite. Nofollow links have an HTML markup that tells Google NOT to follow the link to the website inside of the link.
Why do we have nofollow links?
So which social media networks offer dofollow links? Where on these social networks should you place the link to ensure that it is a dofollow and not a nofollow? Below I have organized an outline of dofollow and nofollow links on various social media networks.
There is only one dofollow link from Pinterest. The dofollow link is the link on your profile page. However, the link is only a dofollow link when the website has been verified. After it has been verified, Pinterest will add a checkmark next to the link, as seen in the image below.
Most of the links on Google Plus are nofollow. The comments, shares and community link posts are all nofollow links. However, if you specifically click the "link" button when posting on Google Plus and add the link where you are directed, that link is a do follow link. Example:
However, if you want to share information that is not your own and you don't want to give the link any ranking power, than use the post area and not the "link" button for a nofollow link.
Tumblr also offers a dofollow link. When you add a link from the designated "link" button on your Tumblr blog, it is a dofollow link. However, if you add a link to the description or if your link is reblogged, it registers as a nofollow link.
YouTube only allows do follow links in the channel header where you can add your social media accounts. The video description, the link from the video and the comments are all nofollow links. This means that the only dofollow links available would be for a wordpress or Tumblr blog in the social media linked area of your channel header.
So to recap, dofollow links pass Google page and nofollow links do not. So follow these guidelines for your website or blog and it will help to drive new traffic!