Probably just a good pipedream someone had a while back and is likely just circumstantial / coincidental to bitcoin, but I suppose it's possible he later developed the ideas, but without a detailed explanation of the technology behind it I'm sure many people have proposed the idea of a digital peer-to-peer currency before, but it does have the hallmarks of bitcoin. Maybe it took him all this time to come up with a workable solution? Who knows. Interesting anyway.