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.

About Eli PariserEli is the author of "The Filter Bubble," a book about the rise of intelligent media, and a pioneering online organiser.

The original video and transcript available in over 40 different languages is available on the TED Talk website.