Social media is a mixed bag when it comes to backlinks. There is a modicum of value, as social media sites allow you to link to your website in your profile. However, these days Facebook, Twitter, and other social media sites mark links as 'nofollow,' meaning that they don't pass SEO value (sometimes referred to as "link juice") to the linked site. These links won't do anything to boost your site's performance in search results.
A backlink’s value doesn’t only come from the website authority itself. There are other factors to consider as well. You’ll sometimes times hear those in the industry refer to “dofollow” and “nofollow” links. This goes back to the unethical linkbuilding tactics in the early days of SEO. One practices included commenting on blogs and leaving a link. It was an easy method and back then, search engines couldn’t tell the difference between a blog post and other site content.
I’m a bit confused now. If it is better not do place a nofollow, so why does it happen on this site? On the other hand, many sites have a place, where visitors can place links (like this one right here). And so the owner of the page does not guarantee for the links placed (makes sense, since they are not reauthored). So I don’t want do be associated with bad sites and do a no follow. Seems like a workaround, lets see whats going to happen in future.
Also, I’ve never found that page rank scultping worked. It might have for smaller sites that have a simple structure to follow. but in case of CMS’s handling a large number of pages and dynamic websites, its not practical to have an intricate graph of how your page rank flows. I mean, even if you did, wouldn’t it be easy and clever if you just leave some thumb rules (like always nofollowing an external link) and leave it to Google for the rest ? Rather ocus on the content ?
And if you really want to know what are the most important, relevant pages to get links from, forget PageRank. Think search rank. Search for the words you’d like to rank for. See what pages come up tops in Google. Those are the most important and relevant pages you want to seek links from. That’s because Google is explicitly telling you that on the topic you searched for, these are the best.
While ordinary users were not that interested in pages' scores, SEOs of a different caliber felt that this was a great opportunity to make a difference for their customers. This obsession of SEOs with PageRank made everyone feel that this ranking signal is more or less the only important one. In spite of the fact that pages with a lower PR score can beat those with a higher score! What did we receive then, as a result?