This is catastrophic. For several reasons. First of all this will cause Anonymous to overstretch themselves. Before, Anonymous targeted large, centralized institutions, using the power of the decentralized structure of the internet against them. This structure in itself is undefeatable. Anyone who has ever tried, ever, to try and block out a network based on this structure, has failed. Be it the fight against piracy or anything else.
By changing it's focus from facing large, centralized institutions such as banks, to targeting another group which also use the decentralized structure of the internet to it's advantage (pedophiles), Anonymous is now suddenly faced with the same difficulties as their former targets had in attacking them - they are now making an attack which success depend upon them being able to overcome the structure of the internet itself. This, Anonymous, like any and all other groups and institutions, cannot do. In this, like everyone else, they are doomed to fail.
Because how exactly are they going to take down all the child porn on the planet? Don't they think the pedophiles have offline backups of their stuff, which they will just upload to a new server, and then a new one, and a new one. Behind one proxy, and then another, and another? And behind tougher and tougher encryption? Just like all other attempts to halt the spread of content, legal as well as illegal, this is an endeavor which Anonymous cannot overcome.
That is one side. The other side is how this is actually helpful to the pedophiles running these kind of sites. I could not help but notice the parents being all "Yeah! Go after the pedophiles Anonymous!" But... How exactly does these parents believe what Anonymous is doing is punishing the pedophiles? They hacked their server. That's it. As mentioned above, they'll just upload the content to another server. And another. And so on. How exactly is that punishing the pedophiles? And much more importantly, how does this help the children who are their victims? See, the problem is, with the server being down, there is no way the police can punish the pedophiles. Where's the evidence? Any and all evidence which Anonymous comes in with, saying, "they did it" will be rejected as fabrications. Because no-one but the police are entitled to gather evidence. This is part of this whole thing called "The Rule Of Law", which in this case has the function that we aren't supposed to be able to go around and fabricate evidence about ppl we don't like and then pull them to court, based on the evidence we fabricated ourselves. Therefore, only a neutral and professional party, the police, is allowed to gather evidence. Therefore, what Anonymous has done is, at best, to serve as a little annoyance to the pedophiles. They'll just share their stuff from another server with better encryption. At worst, what Anonymous has done is to make sure that a ton of pedophiles can walk free. As it can't be proved that the child pornography came from their computers when the evidence wasn't gathered by the police. And even worse - this evidence will even be unusable in cases to get the producers of the child pornography themselves convicted. Meaning they will walk free, the children who are the victims will not be removed by the authorities and put into care. And the abuse of them can continue. Unhindered.
To sum this up. I am, on a fundamental level, a huge supporter of the activist part of the internet. Yet, this has to be one of the, if not the sole dumbest moves which has ever been carried out by any activist group. Ever. For once I actually feel Anonymous owe an apology. Not to me. Not to "the internet". But to the children whose chance at getting out of their lives of abuse, as well as their chance of getting their chance of getting justice against their offenders, Anonymous might very well just have up.