Finally tripped across their privacy policy and terms of use: http://www.flipboard.com/privacy http://www.flipboard.com/privacy http://www.flipboard.com/terms

Finally tripped across their privacy policy and terms of use: http://www.flipboard.com/privacy http://www.flipboard.com/privacy http://www.flipboard.com/terms http://www.flipboard.com/terms They may use personally identifiable information to send "marketing or promotional materials," so perhaps that's how they plan to make money.