I'm disappointed that Mike Hearn would advocate for the use of blacklists, tainting and reduced fungibility of bitcoin . As one of the significant members of the The Bitcoin Foundation, he has the ability to make this kind of scheme a reality. For someone who just went on a rant against the NSA for violating Google's privacy, this kind of betrayal of the bitcoin user's privacy is really heinous. Who will dictate what constitutes a crime? Who will dictate when a bitcoin will no longer be listed? I doubt that he's given much thought to such questions beyond "whatever the police say", which, in this current political climate, is a very ignorant stance. I suggest those who want to keep bitcoin a viable and fungible currency let Mr. Hearn and all of the The Bitcoin Foundation members know that this idea should not be implemented and produce policy positions rejecting it.