Judith Wrote: Take a look at this article

"Search giant Google announced a major revamp of its image search business as it revealed that area of its search service is getting a billion page views every day. Google image search now has more than 10 billion pictures, compared to the 250 million it had when it launched in 2001. This represents the largest image search engine by far, said Marissa Mayer, vice president of Google search. I ..."