Jakob Nielsen has put out an interesting Alertbox post on Agile Development Projects and Usability. I was going to write a little about what I thought of his post, but then I found that Alastair Cockburn had managed to do a much better job of it than I could. Basically: all fantastic, bar the us-versus-them split that the article sets up by saying "Agile’s biggest threat to system quality stems from the fact that it’s a method proposed by programmers".