I used to keep up with this but have been very lazy lately. So far I have
Sourdieselman Hammertime CaliGirl XanaxKing MDPro Nod SuperTrips WhiteCrane (allegedly)
The above were all in the US (xnay supertrips) I know there are a lot more but these are the only ones I know so far. If you know any please post their names and any information you have on how they were caught. I think it will help us buyers to identify poor-security vendors to protect ourselves, and also help out vendors.
Might want to start here: http://www.gwern.net/Silk%20Road#safe