At 19 he was one of the builders of Reddit, the social news site that was purchased by Condé Nast, which turned Swartz into a millionaire before he could legally order a beer.

Aaron Swartz describes the nature of the shift from centralized one-to-many systems to the decentralized many-to-many topology of network communication

https://upload.wikimedia.org/wikipedia/commons/6/63/Aaron_Swartz_-_The_Network_Transformation.webm