Video: Greylock's Reid Hoffman and David Sze on the Future of Social

Reid Hoffman's cute line about the future is "it's always sooner and stranger than you think." Hoffman, a PayPal Mafia member and the incredibly connected co-founder of LinkedIn, has been an early investor at just about every important social Web start-up: Facebook, Zynga, Flickr, Friendster. (As a rare exception, Hoffman didn't get in ...