Vanishing streams

“Almost 30 per cent of recorded history, shared over social media such as Twitter, has disappeared, according to a new study of the Egyptian uprising and other significant events… 11 per cent of the social media content had disappeared within a year and 27 per cent within 2 years. Beyond that, the world loses 0.02 per cent of its culturally significant social media material every day” technology review via @auremoser