Keith Rabois, a fellow member of the PayPal mafia, sent Roelof an email about a website called YouTube.com. Three of their former PayPal colleagues had launched the new service. At first glance, the value proposition was obvious. The founders had built a product that made sharing videos of Roelof’s honeymoon effortless. After uploading his video, Roelof surfed around the site and watched videos others had posted. Before he knew it, an hour had passed. It was immediately apparent that YouTube had tremendous potential as a media platform for user-generated videos.