But it’s disorienting to think that a global communications nexus one day is MySpace the next. As Reid Hoffman, co-founder of LinkedIn, says in the piece, “…it’s not a given. It’s never a given.”

Dean Starkman Dean Starkman runs The Audit, CJR's business section, and is the author of The Watchdog That Didn't Bark: The Financial Crisis and the Disappearance of Investigative Journalism (Columbia University Press, January 2014).

Follow Dean on Twitter: @deanstarkman.