According to the "click tracking" heat map seen to above, you can see that the listings down the left hand side typically receive far more traffic than the paid (pay-per-click) listings found on the right. While 1-3 sponsored listings do sometimes appear on top left hand side, over 70% of all search engine traffic is through a non-sponsored listing. Please note that we superimposed a Google results page on top of this heat map to help clarify what you are looking at.