Mn Attribute Nofollow In Link

nofollow is a value that can be assigned to the rel attribute of an HTML a element to instruct some srch engines that a hyperlink should not influence the link target's ranking in the srch engine's index. It is intended to reduce
the effectiveness of certain types of internet advertising because their srch aorithm depends hvily on the of links to a website when determining which websites should be listed in what order in their srch results for any given term.

The nofollow value was originally suggested to stop comment spam in blogs. Believing that comment spam affected the entire blogging community, in rly 2005 Google's Matt Cutts and Blogger's Jason Shellen proposed the value to address the problem.
The specifiion for nofollow is copyrighted 2005–07 by the authors and subject to a royalty free patent policy, e.g. per the W3C Patent Policy 20040205, and IETF RFC 3667 & RFC 3668. The authors intend to submit this specifiion to a standards body with a liberal copyright/licensing policy such as the GMPG, IETF, and/or W3C

Just because they don’t provide SEO link value doesn’t mn no follow links are worthless. No follow links still provide valuable referral traffic.
A well-placed blog comment or a relevant forum post, no follow or not, can send a huge amount of traffic to your site, which then can funnel down to lds and conversions!
Besides, srch engines today are looking at a lot of factors outside of link juice and PageRank. Social signals like those from Twitter and Facebook are incrsingly valuable, despite being no follow. The is to build your brand – don’t think of what links are good for SEO, but instd think what links are good for your business, your brand, and what links can help establish you as an industry authority. Remember that links, no follow or not, build trust.