I find it difficult not to respond for at least two reasons: - The information is often factually wrong. Letting wrong information go uncorrected will lead to

I find it difficult not to respond for at least two reasons: - The information is often factually wrong. Letting wrong information go uncorrected will lead to that information spreading and that doesn't seem like a good thing to me. - It often doesn't seem to be the intention of people to troll and it is hard to suppress the urge to teach. It would be awesome if you could get more people to intentionally not-troll. The first may be an instance of http://xkcd.com/386/ http://xkcd.com/386/ and the second may be a case of vanity (thinking you can change people), but just ignoring people doesn't improve things either, so shouldn't you at least try? Unfortunately, attempting to address both these points simultaneously seems a recipe for disaster and just results in 'feeding the troll'.