When you buy a book or movie online--or make a political contribution--do you want that information automatically shared with the world on Facebook?

Most people would call that a huge invasion of privacy. But recently, Facebook began doing just that. People across the country saw private purchases they made on other sites displayed on their Facebook News Feeds.

Facebook encourages companies to get "word-of-mouth promotion for your business" to "millions" by using the feature that makes this happen. Sign the petition today

A lot of us love Facebook--it's helping to revolutionize the way we connect with each other. But they need to take privacy seriously.

A compiled petition with your individual comment will be presented to Facebook.