Facebook may be turning 20 on February 4th, but it is just as much of a magnet for controversy and cash today as when it was a brash, break-everything teenager. On January 31st Mark Zuckerberg, the social network’s founder, was harangued by American senators over the spread of harmful material.
The weird magic of online social networks was to combine personal interactions with mass communication. Now this amalgam is splitting in two again.