AppNexus sets the anj cookie which contains knowledge stating whether or not a cookie ID is synced with partners. And with no strong foundation of excellent links, your website is at a disadvantages from the SERPs—even if you're undertaking all another SEO stuff appropriate. Web Directories Backlinks Fundamentals ExplainedRegularity: https://www.seobyaxy.com/blog/how-can-i-get-unlimited-traffic-to-my-website/