I've found it increasingly difficult to wade through mounds of rightwing websites. And companies know how to bury negative comments about themselves or at least pay for someone else to do it.
http://www.kqed.org/news/story.jsp?id=35813
"...According to the digital media research firm eMarketer, search optimization -- and suppression -- is a $2 billion industry. Prominent public companies including BP and Toyota spend fortunes in an effort to keep negative press about oil spills or faulty brakes far away from the first page of a Google search..."