Honestly, I think what most people fail to realize is that angry costumers are actually a pain in Sony's ass, and is bad for their business. Just switch perspectives for a second, and imagine yourself wanting something done YOUR way? Now imagine the group you are targeting happening to be a massive corporation. What is the corporations biggest Achilles heel? Their consumers, in otherwords US the players. Without the consumers to make their business keep flowing, then they are evidently skrewed. So if this 'anon' group is really behind this, do you think they will care that its the players they are skrewing over? Of course not, because it benefits them. This is of course if these Anon people are indeed behind this.
Of course I could really care less about PSN, I don't own a PS3 and don't plan on ever getting one. The only reason why I even know about this, is because a friend of mine is bitching to high heaven about it. So out of curiosity, I did a little google research, and VOILA this lovely thing popped up.