Earlier quoted context omitted.
I binged it, and it took me to this zdnet article: http://www.zdnet.com/article/google-advertising-and-search-e... So the author of that observation is Sergey Brin himself. Lel.
I try not to overuse the reference, but "Anatomy of a Search Engine" [1] is so deliciously prescient and ironic that it's hard to avoid. It's funny how hard Sergey and Larry shifted once personal fortunes changed their motivation. [1] http://infolab.stanford.edu/~backrub/google.html
(Not to be confused with del.icio.us, which is now ... Pinboard.)