Interesting, and I suppose it's good if you want to game, but I do have to wonder what Anonymous hopes to accomplish then. Really the only way to get to a company like Sony is through it's profits and abillity to promote it's brand, that means having to terrorize and drive away the customers.
I don't want to be on the receiving end of this when I try and game of course, I'm just speaking conceptually here. Simply harassing executives and such accomplishes very little since these guys are getting paid big bucks in part to endure things like that. They can "take it" because they are ater all very, very rich from doing what they do.
I can see where Anonymous is coming from of course, but in general accomplishing anything through antiseptic means when it comes to organizations like nations and large companies is nearly impossible. The trick to a campaign like this, if you want it to work, is to terrorize the regular people and show that the group your targeting can't protect them, and since nobody can stop you, to get the people to go after them as a way of making you stop.
I won't get into the morality of this, simply the effectiveness. It also all comes down to your abillity to erase hope (ie it doesn't work if people think they can viably oppose you or simply avoid your attention), and of course you not caring what people think of you in pursuit of your goals.
As odd as this sounds, it seems to get to the heart of the whole "Old Anon Vs. New Anon" thing. This level of courtasy is a heck of a lot less terrifying than a group that is willing to decimate an entire goverment to make a point, and demonstrates the abillity to do things like take the Australian goverment offline for nearly an hour despite the declaration that they were coming.