[dpres]

List of Anonymity Networks: http://en.wikipedia.org/wiki/Category:Anonymity_networks

My Top 3:

1. .i2p Eepsites - http://en.wikipedia.org/wiki/I2P

2. .onion sites - http://en.wikipedia.org/wiki/Tor_(anonymity_network)#Hidden_...

3. Freesites - http://en.wikipedia.org/wiki/Freenet