I'm glad Google made CardDAV available and decided not to restrict CalDAV, at least for now. However, I wonder how long it will continue to support these standards, especially for users of the free services. Supporting these standards might not be directly in Google's best interest, since the more thoroughly Google supports task-specific protocols such as CardDAV, CalDAV, and XMPP, the fewer opportunities it has to present ads. So it may still be good for users to think about moving to services where the user is actually the customer.