Are you sharing more than you mean to online? Computer scientist Jennifer Golbeck explains how the simple act of "liking" something on social media reveals more personal information about you than you'd think. Is this what privacy looks like in the digital age - or is there another way?
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We want to know what you think. Join the discussion by posting a comment below or tweeting #TEDWeekends. Interested in blogging for a future edition of TED Weekends? Email us at tedweekends@huffingtonpost.com.