The FTC has spoke on this before. https://www.ftc.gov/news-events/blogs/business-blog/2013/06/... I believe nearly all the search engines are still guilty of this one. I also think firms should be able to buy "blank space." For example facebook or amazon could pay NOT to have an ad above their result. Maybe they already do, I dont see an ad when I search facebook, however I do see an ad for amazon above the top amazo…
I worry about the implications of the blank space idea. For example, if I owned coolstuff.com, when should I expect for my standard search result to be shown below the "blank space". Today, if someone searched "cool stuff", my site shows up as the top search result, but my arch-nemesis, the owner of neatstuff.com, has an ad tailored to that query. Would his ad go away since mine is the top search result for "cool stu…