They’ve decided to publish, in the form of a blog, all of the letters they receive (excluding ones that are patently offensive). There’s also a comments section for each one, so that the letters they receive don’t just serve as static items, but as conversation starters. Already, within a few days of launching, plenty of people are commenting on each other’s letters. It helps, of course, that The Economist has a rather intelligent readership, so there are plenty of good letters that they don’t have space to publish in the print version. It’s obviously not a radical step, but it’s an interesting experiment that shows how publications should be thinking about social media.