[notahacker]

Removing Facebook from searches for Facebook or people's names wouldn't just invite investigation, it would damage Google's credibility as a search engine. Penalising the Facebook content farm consisting of Wikipedia articles plus lists of fans would probably be a net positive though.

[spyrosk]

In the post you replied to I said that google could manipulate the search results to change facebook's pagerank, not dropping them entirely. Just so that results from the domain appear on the second or third page.