The history of science is replete with discoveries that were considered socially, morally, or emotionally dangerous in their time; the Copernican and Darwinian revolutions are the most obvious. What is your dangerous idea? An idea you think about (not necessarily one you originated) that is dangerous not because it is assumed to be false, but because it might be true?
http://www.edge.org/q2006/q06_index.html
AllPeers Is The FireFox “Killer Appâ€
[move over sell-out & filtering p2p networks, here comes the REAL DEAL!]
AllPeers is a simple, persistent buddy list in the browser. Initially, interaction with those buddies will be limited to discovering and sharing files – If you choose to, you can share any file on your network with one or more of your friends. They will be able to see what files you choose to share (even getting an RSS feed of new files you include), and with a single click download it to their own hard drive. AllPeers is a bittorent client!
http://www.allpeers.com/blog