Lets face it, the #1 use of Bitcoin right now in the world today is shifting money around off the radar of the banking system. Don't say it isn't cos it is. Bitcoin started life as an underground curency and therefore by definition, its initial target users were always going to be black/grey market participants. Honest John Law Abider got in on the action through speculation, speculation which came to dominate Bitcoin transactions, but speculation which is built around a spine of black market transactions.
Ahh, Mat, bitcoin doesn't enable money laundering. The ones that profit from money laundering are the ones that enable money laundering.
Some day you will get this. I can feel it.