I Love TED Talks.This is a very good outtake. A little over a year old but still very relevant.
http://www.ted.com As web companies strive to tailor their services (including news and search results) to our personal tastes, there's a dangerous unintended consequence: We get trapped in a "filter bubble" and don't get exposed to information that could challenge or broaden our worldview. Eli Pariser argues powerfully that this will ultimately prove to be bad for us and bad for democracy.
Read our community Q&A with Eli (featuring 10 ways to turn off the filter bubble): http://on.ted.com/PariserQA