I'm all for anonymous activism, but come on. Do they even have a reason for this attack, or was it purely to be able to gloat in having taken down half the internet?
Godaddy has been a powerful supporter of limits on internet freedom. Given the size and influence of the company and the arrogance of its (politically reactionary) owner, I understand why they would be considered a target. Even though I have close to 100 domains registered with Godaddy, I fully support this action by anonymous.