I figured someone would try to hack it based on moral grounds eventually, and I was half right. What triggered the action was -according to the hackers themselves- a fraudulent practice by the company behind the website, which offered its users the option to delete all personal information from their servers for the small price of $19, but didn't hold up their end of the deal.
And I couldn't help but notice this:
I wonder if they're just feminist hackers or if they say this because the majority of the userbase was made up of married men. It will be interesting to see some statistics.