For what it's worth, most of my time has gone into working on Celluloid, which is the concurrent object framework I'm using to write the Cryptosphere, as well as taking the rather intensive http://crypto-class.org

Well, he's already built Celluloid (for handling concurrency) and DCell (for handling the distributed part).

Also this is the second p2p system I've tried to develop: https://github.com/tarcieri/distribustream

Just learned about those two projects, thanks.

Just leaned about the fact, that he's the maker of Celluloid/DCell. Both pretty awesome!

Should be noted that most of the documentation is theoretical. There isn't really much implemented yet, you can't yet use it.