And what he said was off-topic. He was invited to speak on alternative social media and using them to get the anti-bullying message out/raise awareness. He failed. He could have shared his expertise in using social media to help the budding journalists in his audience (whether they agree with his POV or not). He didn't. Instead, he indulged himself in a rant about one of his fave topics. We all know lecturers who do this instead of sticking to the topic. And that's what he did.