Future of the Internet

BCS are hosting a debate next week - sold out :-( - featuring Jonathan Zittrain and Bill Thompson, looking at appliances (e.g. iPhones, XBox) and the impact they're having. Should we be concerned that appliances stifle the ability to create new things on the Internet, or should we be more concerned about safety and security? Some discussion on one of the BCS blogs - http://www.bcs.org/server.php?show=ConBlogEntry.441