What many people failed to realize was that when Google purchased DoubleClick, it now was also the owner of a very large search engine optimization company called Performics, which is a wholly owned subsidiary of DoubleClick.
In the Google SEO guidelines, they claim not to have any relationships with any SEO's and doesn't offer recommendations. They also claim not to sell better ranking within their results. Technically though, now anyone who hires Performics is paying Google for better search engine placement.
On the official Google/Doubleclick acquisition faq:
Q: What will Google do with Performics? A. Performics is part of DoubleClick, and we are acquiring it as part of the transaction. We have no plans to dispose of it at this time.
[edited by: tedster at 10:29 pm (utc) on Nov. 16, 2007] [edit reason] attribute quotes [/edit]