Eric at Elder Game has opened up signups to test his one-man indie MMO, Project Gorgon. I don't have the time to justify taking a slot among his testing ranks, but it's definitely an interesting project. It's fascinating for me as someone who analyzes game design to see the choices that a real live developer makes on allocating development resources - choices that are easier to comprehend because of the scale (one developer, as compared to the $100 million AAA MMO studio).
If you have the time, and you find what he's written on the project interesting, I recommend the project. It sounds like fun, and you might learn a thing or two.