Hey everyone, in 2015 I made a nice amount of money by ranking CPA websites (mostly game hacks) on the top results of Google. Now I want to get back into CPA, and registered a domain for a medium competition niche. My question now is, what is a good backlinking strategy? I used to build a lot of backlinks with GSA in 2013-2015 and add some PBN posts. I currently own and am able to manage 40 PBN websites, which all have their old content restored and all have different hosting, no footprints etc. So what is the best way to use these nowadays?