I have read tons of KW research guides, however it looks like those guides are written for Adsense only. I have searched on Google a lot but nothing appears suitable to my need. Just want to ask you guys some questions, it would help me a lot (Personally, I think if question 3 & 4 are answered, we can see a bigger perspective and then find out our problems) 1. Do the CPC and Advertiser Competition matter ? (Please notice that Advertiser Competition is totally different from SEO Competition) 2. Can I use micro niche site to monetize by CPA ? 3a. What is the average monthly searches of your kw ? 3b. Where is the position of that kw on Google SERP ? On Youtube SERP (if you use Youtube method) ? 3c. How many CPA offer that are completed successfully ? (conversion rate of that kw) 4. What is your criteria (Local searches ? Global searches ? SEO competition?,...) in picking a kw to SEO ?