Hi, Yesterday i read a blog where the webmaster increased the DR by 10 and traffic by 30%. within 15days just by guest blogging on 9 High DA sites. As my website is an e-commerce store. My options are limited because most of the high DA websites charge money for the sponsered post. Because i am planning to build high DA links without buying but by publishing high-quality guest posts. So i am planning to write articles on business, entrepreneurship which is somewhat relevant to my niche and then ask them for a link from the author bio. My question is : Does author bio links from High DA websites add any SEO value compared to contextual links?