This is my personal opinion it may be wrong, I open this topic for discussion. SEO levels categories as below: Lvl 1 - Entry: link builder (able to find space create backlink) Lvl 2 - (Include lvl 1 skill) - Beginner: keywords analyst, able research potential keywords and target it rightly Lvl 3 - (Include lvl 1 and 2 skills) - Intermediate: good in socialize, able to write article and active in social media. Lvl 4 - (Include lvl 1 - 3 skills) - Above average: Result driven, able to rank keywords and increase traffic. Lvl 5 - (Include lvl 1 - 4 skills) - Professional: good adviser, able to analyst and fix site problem, increase conversion rate, manage ads funding, marketing and maximized revenue. Lvl 6 - (Include lvl 1 - 5 skills) - Ultimate: Super star, able hunt searching algorithm, have great follower, predict future trending. What is your SEO levels? I rate myself as 3.5 levels.