hey Zoasterboy,
I appreciate your posts. It's funny though, I am new to apps and have just got my developer account working after 6 weeks, so I have been reading through the lit. I just got my FaceBook account setup, too, and I have exactly the opposite response.
MySpace is young, using new technologies and shoehorning them together, but the system is rational, predictable, and shows conscious design. The FaceBook system is one massive kludge, full of bizarre hacks like renaming all the JavaScript objects and nothing works until the user's first click. It is childish and primitive in comparison.
Creating a backend that will work with both of them seamlessly is going to be a challenge.
Remember, bloat never goes away, nothing is ever streamlined, and the second law of thermodynamics is a farce.