Its a double edged sword. I'm actually working on building an anonymous posting board for facebook where users can switch between their news feed and the anonymous board. Creating a non hateful, troll filled anonymous environment is a mighty challenge, but I dont believe its impossible and thats part of why im attempting to take this on. There are benefits and detriments to every annotation/commenting system out there. Moderation is a high priority, but i havnt been able to come up with a solution. This article also failed to mention how they imagine moderation fitting in. Is it possible to crowd source moderation, rather than centralize it? And can it be done with anonymity?