Looks like Microsoft is investing even more into a business model Web 2.0 style with a twist.
Some of the main Web 2.0 elements are all there:
(1) On-line service free for the subscriber.
(2) Subscribers are the content providers.
(3) Service released early as Beta.
(4) Advertisement supported model.
Obviously they also have to inject their Microsoft twist to it; a perfect trojan horse methodology: infiltrate and conquer...
If you try to subscribe using FireFox they tell you to go get IE.
Again, sounds familiar?