PBN links (Personal Blog Network links) are websites used to help build business links to a specific website to increase its SEO rankings on the web. They have created a network of websites that are authoritative in nature and help in upscaling the website. The user uses a business website to generate income and thus wants its website to have higher rankings and sustain its SEO ranking online. These are regulated so Google terms it to be trustworthy since it has formed a PBN. That is what helps users gain more popularity since Google itself refers to or links these websites to other users because it has a PBN. If Google is referring to a website or you are receiving some links from Google, then it’s not a brand new website or a spam website that is sending you these links. It is Google that has recognized these websites as trustworthy and has authorized them to be popular. Guest posting is another method of establishing your content not on your website but on somebody else’s website, which already has a lot of traffic and can get itself easily promoted.