Edit: Changed everything.
Alright, so everyone can shut up, first, they have the right to do this. And yeah, I know what A LOT of people are going to say, but its like with the PSN outage, users WERE WARNED it could happen, people still signed up and bought things over the system. For some, its more or less easier, while others think about more, there were STILL people, aware of the risk, that it COULD happen. Facebook did the same thing, you have been warned.
Next, Anonymous is powerful, they ARE, more or less they are a core idea [interenet freedom] with held by people who want to withold the idea. So, in a nutshell, this means ANYONE can say their part of it, when their amount of being part of it is debatable.
Thirdly, Facebook, they ARE asses. And infringe on one of Anonymous's ideals, more or less, the ability to be Anonymous over the web, safe and secure. I trust the Escapists not to sell my stuff to foreign politics, or to foreign war lords, or assassins, or rapists, or cons. But on Facebook, your name is RIGHT THERE! And they WILL check to make sure its your REAL name, and your REAL house, and that you are the person you say you are. Its WAY easier to hack someones E-Mail if you know their name.
And finally, my stance on it, as just go ahead Anonymous. People agreed to the risks, and if the risk happens, it shows people to be more cautious with their info-input. Anonymous is a organization that is just trying to make people respect the internet, freedom of its domain, and its livelihood, if they have to do it by hacking people who do things to take away freedom, or take away its credibility, then they should go ahead and do it. Freedom over the internet is a crucial thing that should start to come along in the future, without this group, it may take WAY longer then with it.