Almost everything we now do on a regular basis, from sending emails, taking photographs, writing text messages, calling on our cell phones, downloading music, typing on our computers, and using our credit and ATM cards, all of it generates information. And every single day the endless information generated by our ever-expanding digital footprints is recorded, tracked, searched through, sold, analyzed, and saved forever. Some might call this hyper-networked digital explosion and its potential for collaboration and innovation a kind of utopia. But others warn that it also raises important concerns about privacy, identity, freedom of expression, accountability, and the future of democracy.