Yesterday I was asked at very short notice to fill in for another columnist at the Guardian and turn round a piece in an hour. I wrote about Sarah Palin and small town American values. If you'd like to read the piece it's here. If you'd like to comment I request you do it on the Guardian's site, not this one. I can't turn off comments for one post only, and I don't want to pre-screen comments unless it's really necessary. So head off there and join the fire storm.