32. Credits
Richard St. John's 8 secrets of success
http://www.ted.com/talks/richard_st_john_s_8_secrets_of_success.html
Seth Priebatsch: The game layer on top of the world
http://www.ted.com/talks/seth_priebatsch_the_game_layer_on_top_of_the_world.html
Steve Keil: A manifesto for play, for Bulgaria and beyond ...
http://www.ted.com/talks/steve_keil_a_manifesto_for_play_for_bulgaria_and_beyond.html
Derek Sivers: How to start a movement
http://www.ted.com/talks/derek_sivers_how_to_start_a_movement.html