Please post this again when it doesn't come with "Current users of the service should be expect frequent downtime and even data loss during the Developer Release period. "
Updated to more accurately reflect the situation:
Current users of the service should expect some downtime and must careful to backup their data during the Developer Release period.
We haven't had any unexpected downtime or data loss with current users, we just wanted to make sure to warn people that they're using something so new. Thanks!
No thanks.
The point of the disclaimer is just to make it clear that we expect there to be some initial hiccups, as with any new service.