[unfunco]

4chan is viable as an anonymous and ephemeral p2p implementation, 4chan has always suffered from the cost of running the service, which is kept to a minimum (relative to say, reddit) due to the lack of persistence. It can thrive with a peer-to-peer infrastructure since the need for advertising to sustain running costs would disappear, add encryption, restrict content to images and text to avoid the RIAA or MPAA getting close and it could be a veritable outlet for unabridged and uncensored views.

[mustacheemperor]

Hasn't this been tried before? If I'm not mistaken Aether is a similar concept but I'm not sure how much traction it's gotten. http://getaether.net/