What will be the next big thing online? And how will it change our lives? In the Digital Giants series, the digital world's top thinkers share their visions of the future with the BBC.
Joe Rospars, director of digital strategy for Barack Obama's presidential campaign, speaks about the new age of online campaigning and the implications this will have for the political spin doctor.
Digital Giants is part of
, a season of programmes on TV, radio and online exploring the extraordinary power of the internet.