] Google Inc has been sued by a search engine optimization
] company, which claims Google deliberately altered its
] ranking when it realized the SEO company was competing
] with it. Search King Inc, of Oklahoma City, wants an
] injunction and $75,000 damages for alleged loss of
] business.
]
]
] Search King launched a service in August that allowed
] companies to place "text ads" on pages that score highly
] from Google's PageRank ranking algorithm. The rationale
] behind such a service is that a link from a high-PR page
] increases one's own PR, and makes your site more visible
] to Google users.

#1 Search Engine Optimisation Blog - Google sued by search optimism company | The Register