kindof, yeah. Zooko wanted to build a distributed data economy with mojo, i'm not too sure on what happened to it, but we have talked with zooko and other people on the tahoe-lafs project and they seem interested in working out some sort of interop between our systems.
I believe mojonation's currency was not decentralized
It wasn't, but you could have had multiple issuers of currency. Not that it ever got big enough to flex that part of the protocol.