A few weeks ago, an interesting proposition landed in my inbox: would I be interested in contributing to the politics section of the soon-to-be launched Huffington Post UK?To be clear, when I say the proposition was interesting, I don’t mean I was interested in accepting it: as a general rule, I try to only write for free when I have something to promote. I mean I was interested to learn that Arianna Huffington and Aol were willing to direct time and resources into launching HuffPost UK: a project that, if you believe some UK media critics, is so clearly doomed to failure.