It's not that easy to do, bitstamp needs pics of your ID, you holding them, and notarised copies of everything with the pics of notarised copies taken at an angle. You can't use an unknowing smurf, they need to be in on it.
True, they can't do that without the person's being "in"; but that does not mean much.
Here in Brazil those money laundering props are called "oranges", I don't know why. They usually are low rank employees -- drivers, janitors, construction workers. They will do what the boss says, without trying to understand what it implies or is for.