Mises.org has been pushed very hard to comment on the Bitcoin issue, and I’ve probably read and sent 10 articles around for review. We’ve run nothing on it just because the right piece that takes full account of both the technology and robust monetary theory just hasn’t been written. In the meantime, it seems that Bitcoin is tanking.
Any libertarian has to have some sympathy for any effort to create an alternative currency, and the state has narrowed the options so much that we can fully expect a long series of nonviable projects to emerge in the future. It is part of the terrible struggle of our times to find ways of living free in an age of government omnipotence.