Sure, an iPhone app is only a small thing. And, in this case, there's certainly room for improvement, as well as for more MPs signing up to the service. But it's a decent start - and further proof that a combination of simple technology and proactivity on the part of MPs can result in something very much like progress. Now all we need is an iPhone app which shows expenses claims in real-time. That really would be "post-bureaucracy" in action.
UPDATE: Dizzy thinks that an iPhone app may not be the best, or most open, way of reaching out to the people. He has a point. But I'm of the view that this is preferable to nothing – and all the better if more MPs get involved and in less exclusive ways.