How much is a tweet worth? The question has an almost koan-like quality. And yet at a time when the ranks of billion-dollar social-media companies keep growing (Instagram being the latest), it’s a good time to ask about the value of the services they provide. That is exactly what Rob May, co-founder of Backupify, did in an entry on his tech company’s blog. May’s calculations were straightforward and fairly back-of-the-envelope. He derived his first number, value per user, by taking the valuation
Original source article: Businessweek