I currently have an adult site which is bring a good $35-$40 a day. It's an EMD that's ranking top 5 for 7 keywords with 140k exact searches a month total and is ranking 39th for a keyword with 6,000,000 exact searches. Obviously, I want to get into the top 3 for this keyword. I haven't done much SEO for this site but now I want to. The site is in the adult niche but it's not a porn site. It has 6-7 pictures that show naked girls. A porn site review site is the closest type of site related to my site that I can say. My question: Will tiered backlinking work with this type of niche?