What the Internet is hiding from you

What the Internet is hiding from you: "Eli Pariser made his mark on the Internet as the executive director of MoveOn.Org, the liberal group that was perhaps the first to turn the Web into a tool for massive political action.

Now he's worried the Internet is becoming too polarized, politically and otherwise, because of tools used by some of the technology and social-media world's biggest players.

His new book, 'The Filter Bubble: What the Internet Is Hiding from You,' details the ways Facebook, Google, Aol and numerous other online hubs quietly are personalizing the Internet for their users."