You have got servies and gig links, social signals, quality content, on-page optimization.
How about traffic?
Autosurf and bot traffic sucks big time!
Page quality and link quality matter traffic quality matters too!
HOW WOULD YOU LIKE....
A huge number of REAL browsers searching browsing your sites & your keywords?
Organic CTR is a SIGNIFICANT signal for how the search engines are determining ranking standings. Let us say Jim searches Google for "Orlando Used Cars" and he scrolls slowly reading through a few pages of search results and then clicks on th then browses that website for a couple minutes before leaving, this tells the search engine that Jim found this site to be comparative and most interesting. When this happens a lot, it becomes a tendency, over time, this has a major impact on search engine ranking positions.