These pump-and-dump schemes are getting ridiculous. Implementing a cryptocurrency client in Haskell isn't enough to justify creating an entirely new currency. Whether or not the protocol itself is sound is (almost) completely orthogonal to the language in which it's implemented, and at this point there are dozens of Bitcoin clients written in many languages (including Haskell [1]), so it's extremely unlikely that Bitcoin as a whole is still at risk from unsafe language choice.

1: http://haskoin.com