I meant unsuccessful from the point of view of shutting down Bitcoins. However, I suspect that they'd find it difficult to charge Gavin. The Bitcoin system doesn't use physical coins, so they won't run afoul of the same law that shut down Libery Dollars. There also isn't a lot of difference between Bitcoins and in-game virtual currencies like ISK, or WoW gold. You'd also have rights organisations like the EFF lining up to defend Gavin.