Tom Stafford has been studying, researching and teaching psychology at the university level since 1996, when he received his PhD in Cognitive Neuroscience. He's currently employed as a researcher for the BBC and editor of The Psychologist magazine (the official journal of the British Psychological Society), positions which bring him into contact with working research scientists around the world. Matt Webb's background is in new media. His freelance activities include an IM interface to Google, which predated the Google API and is included in O'Reilly's Google Hacks. He launched a project to find the Web's favorite color that was featured on BBC News Online and national newspapers in the UK. His current job in R&D at the BBC involves these kinds of projects internally, and gives him experience at addressing abstract social and technological ideas to mixed audiences. He was a popular speaker at O'Reilly's Emerging Technology Conference in 2004.