"Looking for the list of all auto manufacturers? Or presidential libraries? Or art supply sites? A casual comparison of our results with those of the major search engines would convince you that we were on to something. We recruited a group of non-technical subjects to do a usability test, and it flopped. Sit people in front of a search box and ask them to test it, and their first query is their own name. #FAIL."
Why did they assume their primary market was going to be non-technical people? Why not build some thing like stumbleupon of 100 Million bookmarks.