P2P and anonymity: MUTE

 Mute is a file sharing network that uses virtual addresses (instead of IP addresses) and ant-inspired routing algorithms to protect the privacy of both downloaders and uploaders.

• MUTE protects your privacy by avoiding direct connections with your sharing partners in the network. Most other file sharing programs use direct connections to download or upload, making your identity available to spies from the RIAA and other unscrupulous organizations.
• Ants display collectively intelligent behavior when foraging for food or fighting off predators. Each ant in the colony acts in a rather simple way, but together they end up doing something clever, like discovering the shortest path between their ant hill and a food source. MUTE’s routing mechanism is inspired by ant behavior.

Here is a lit of available NODES, a collaborative Wiki is also available Mute Wiki