Granted, they weren't working with the bitcoin, but its my understanding that they were using Tor. So, it looks like they followed the money. since paypal, WU, etc were used. Now. even if mt. gox and other exchanger were to cooperate, it would be very difficult to prove that mt. gox account had anything to do with sr. since sr has a built in mixer. So SR is doing this that are much more difficult to follow, which is good. Also, it took them 2 years to take down TFM. Im sure that iti wouldnt take much for them to do small busts here and there, but the gov. loves to take down everything at one time, so, who knows what their strategy is. If anyone is nervous, there is no harm in taking a break, just stop all illegal activity. (I have).. Clean house and wait... See what happens.. Everyone will understand. Safety is much more important than a few bucks or getting high.. Just use common sense, take all precautions that you can. You should be fine..