Most of you know that on certain searches for generic terms stock images can rank pretty high. I wonder if when the "artists" put together their book they cleared rights or purchased any needed licenses for their new Google Dictionary book

http://www.creativeapplications.net/scripts/google-the-first-google-image-for-every-word-in-the-dictionary/

While intended as an art piece, the artists Ben and Felix are currently looking into having a small run of softcover editions of Google printed to sell.