According to Unbounce.com's article, SEO v. PPC,
- "SEO’s return on investment will continue to rise long after PPC has peaked. This is because of several reasons. If you are consistently searching for similar terms then you will start to see the same ads and develop the equivalent of banner blindness (visually tuning out the ads)."
- "85% of clicks resulting from a search are on the organic links rather than the paid ads."
- "86% of web searchers trust organic SEO listings more than sponsored/paid PPC listings."