On another subject:
In the case of many hackers, such as those dealing in stolen financial information, chats will take place in private, with new members coming into the group only if they know an existing member. However, in the cases of Anonymous and LulzSec, some of their chatrooms are public. The FBI has set up shop in numerous social media sites, going undercover where necessary to root out hackers and other online criminals, and it would not be surprising if they were actively monitoring IRC channels in this case.
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Interesting times. The lulzsec/anonymous crowd is playing for money now -- I hope they know what they're doing. I'm sure some of them do, but not all of them. The problem with groups like these is that any break in pure anonymity is lethal -- you can't trust anyone. People you know well and trust are the biggest threat -- a drill bit on the knee will make almost anyone talk.
And these guys are charging full speed into knee drilling territory.