It's quite possible that they do have the ability to do something.

Anyone who hasn't noticed their past activities might want to take a look at Anonymous – Wiki where there's a fairly comlete list of their more notorious actions.

I actually figured more people here would be impressed with their "attachment" to Fawkes, and their possible attack on Fox News. I'm not sure I understand what they've got against FaceBook, but they've been a bit vague about whether their penetrations of the military and the FBI are attacks on secrecey or on stupidity(?) and they don't really seem to have a very coherent agenda.

Recently, Anonymous Reveals IP Addresses Of Alleged Child Porn Viewers In Latest Sting has been given "impled credit" for some arrests, although of course legal authorities have to establish and confirm before they can arrest anyone, so it could produce more than has been visible thus far.

John