When a group of students was recently assigned to write reports on Martin Luther King, Jr., several of them learned that King had in fact been a drunken philandering con man. Where in the www did these kids search? Google, for starters.
People's opinions can be altered by changing the order in which stories are presented. Search engine companies are at best delinquent and at worst complicit in allowing this manipulation to be so easily achieved.
Google is late in providing its enhanced layout and more sophisticated tools. Much of what the company announced is already standard design for Bing, and is common in many professional search based applications.