We've been doing lots and lots of testing with Podcast Spot lately, and things are looking good. I'm really excited!
Our plan is to start private testing (so more than just ourselves, some actual real users) in a few days, and carry that throughout August. If you want to be one of the testers, please drop me an email at mack@paramagnus.com, but keep in mind I can't promise anything! If we're getting the data we need with our existing testers, we probably won't add anymore.
If the testing goes well, we'll plan to launch Podcast Spot around the middle of September, so that we get a week or two of public use before the Portable Media Expo.