[cellinis]

Alex,
I beg to differ. Anyway you look at it, google applies editorial control over the materials they publish. Albeit, the editorial control is applied over an algorith, which in turn applies editorial control over the content published.
Remember, google doesn't list it all. It just lists what they consider to be pertinent to the search term. Besides which, they host thumbs (and create thumbs, which makes them a secondary producer, as they are indeed manipulating the images) on their own servers.