I'm busy testing out the listener features of Odeo right now. Thanks to Rabble for the invite. My quick assessment is that it's a very pretty looking site and a very usable application. They're doing some very interesting things and I like the fact that they're really testing it out before the release. I've already made a couple of suggestions on how they can make it better. I'm really going to use the heck out of it over the next week before making any further conclusions.