So! Is Money Laundering with Bitcoin's really Money Laundering?
Very simple answer: No.
Money laundering is concealing the source of money, or rather making the source look "clean". For example, I could declare some cash as income from my restaurant, when in fact it was stolen. Or, I could declare some cash as income from my bank, when in fact it is counterfeit. Changing cash into other cash might make the serial numbers unrecognizable, but it is hardly "clean", it is still cash. Bitcoins don't make money laundering any more easy than cash does. A bitcoin is a bitcoin, in no way indicative of "clean" income. In fact, it looks dirtier. People who say bitcoins enable money laundering clearly have no idea what they are talking about.
Slightly more complex answer: Yes, there is a new kind of laundering one can do with bitcoins, but it is not the same as what most people mean by money laundering.
Because bitcoins have a public transaction history, one can trace them. Because of this it becomes desireable to move them around and make this tracing more difficult. This can be referred to as "bitcoin laundering", for example the bitcoin tumblr, moving from wallet to wallet a few times before sending them to a vendor, etc. Keep in mind that at no stage in this process is the money disguised as a legal income stream, thus this is not laundering money in the conventional sense.
Good question