The msgpad beta has been running for two weeks now and so far I'm happy. My biggest problem though is that the system sometime seizes up. There are complications hosting a fastcgi application at Dreamhost. There have been reported work arounds, none of which have worked for me so far. I'm going to try one more thing and if it doesn't work I'll have to find hosting somewhere else. "PlanetArgon":http://planetargon.com or "Textdrive":http://textdrive.com are most likely so far.
Also, I keep coming up against the same architectural problems on the view side of my application. I get the distinct impression that web applications are still very young and that better tools are required. The biggest issue I have with web application development is that you need to not only think about the problem domain, but also how to orchestrate the technologies. This needs to be fixed.