Once upon time, searching for keywords "more evil than Satan himself" in Google would give Microsoft's web page as the first, best-ranked search result.
This thing was also mentioned in SJGames' website; they also did some other empirical queries. Apparently Google denied it was an insider joke, and Microsoft certainly wasn't aware of this.
The reason for this is simple, if you think carefully: Google indexes the results based on importance. Now, people who proclaim Bill is Satan Incarnate on their page link to Microsoft's page... I leave the rest for your vivid imagination.
This does not work anymore - at the moment, the top result is, ironically enough, an article in Search Engine Watch about this phenomenon...