> Click the Like button on a Page that challenges your beliefs, interact with that information and you'll see more of it.

Yeah ... not gonna happen. I already use private browsing windows to read anything even remotely controversial. Not going to start building a publicly visible history of 'liking' things that could be seen negatively. Call me paranoid, but I can see that happening some day in a job interview or something similar. I love my freedom, and that includes being able to read whatever I want without being accused of wrongthink at some point in the future. Facebook isn't getting any data from me on that front.