I still don't see what all the fuss about syncing contacts on the tablet is about. Baffles me. Skype, SIP, E-mail and IM already have contact lists stored on central servers, and the tablet doesn't have a phone...

The only sync I can see that would be useful would be having a central calendar that can be accessed from all of your devices, and preferably, in a more limited way, by your family members, co-workers, etc, as well. But that's syncing to the cloud from a variety of devices.

Calendar sync still doesn't work well even on devices that supposedly support it. My iPhone-owning friend smacked his forehead the other night while sitting in a pub with me. Somehow, two meetings had been scheduled at the same time, and no warnings had come up.

EDIT: Just want to clarify; I think the idea of doing offline stuff with online services (like Facebook) is great, but I'm not sure that's what I'd call "sync".