Anonymous is a scary group. If you really think about it, all you have to do is piss them off, and they have the organization to take down anything. It's true that a DDoS is less impressive than actually hacking the site, but I'm sure they're already working on that. I guess the really scary thing is that nothing is secure on the web. No matter what the site ensures. Yeah there is encryption to protect discrete bits of information, but in terms of servers, content management systems, and other types of web software, they are all vulnerable to hack attacks. It's really kind of scary, at least to me.
Then again, I tend to be a bit paranoid about web content. I guess I know just enough to scare myself, but not enough to really know what I'm doing. LOL