Microsoft is doing new Web 2.0ish things with a twist

Looks like Microsoft is investing even more into a business model Web 2.0 style with a twist.

See: http://officelive.microsoft.com/
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; infiltrate and conquer...

If you try to subscribe using FireFox they tell you to go get IE.Again, Here again a twist.