The article has, among others, two interesting quotes:
"Before that, they were responsible for hacking Time Magazine's voting system for the World's Most Influential Person, making the site's creator, moot, the winner by a wide margin."
Confirming my assumption that Obama's "What Do Americans Want" survey's result may very well have been riddle by the like of Anonymous and 4chan.
In a comment:
"They probably couldn't do it though. They have become weaker since the scientology days."
4chan may be behind attack on Twitter | The Web Services Report - CNET News