When you sign up for Facebook, the service first searches for any mentions of your name and suggests you befriend anyone who has mentioned you in their posts. It then asks to access your e-mail account so you can connect with anyone with whom you regularly correspond.

It's my fond hope that social networks such as Facebook will help users broaden their perspectives by listening to a different set of people than they encounter in their daily life. But I fear services such as Facebook may be turning us into imaginary cosmopolitans.

I study the ways new media shapes people's perceptions of the world.

Ethan Zuckerman Quotes