
I finally got Live Mesh working on my Mac, my phone, and my fileserver. I'm waiting on a new laptop for work, so I haven't installed there yet.
I have to say this is very cool. At the very basic, it does file sync. This is what most users will see at first. I've used several different sync applications, and within a couple of days, I've been quite satisfied with this solution. One thing to note is that the Windows Mobile client actually does scheduled sync with your Live Mesh desktop in the cloud!
The Windows Mobile and Mac client sync with the cloud. The Windows client has the ability to sync with the cloud, and to sync peer to peer with other Windows clients.
The interesting thing is that you can sync with other people's Mesh objects, if they invite you. I can see this replacing Groove and FolderShare when it is release (it's a Technology Preview right now.)
More to come as I play with it. BTW, there's a SDK as well.