Porn no longer dominates the keywords entered into search engines according to Web Search: Public Searching of the Web, a new book by Amanda Spink and Bernard J. Jansen.
Spink told the Associated Press that "twenty percent of all searching was sex-related back in 1997, now it's about 5 percent." 5% is still a strong showing for porn searches, but the 20% attained by ecommerce related keywords shows how people have rapidly adapted to online shopping.