First of all - thanks a lot for this code - you saved my bacon - it was just what I needed!
I had to upload 23 files @ 20Mb each and the web-site upload was not playing nicely at all...
Anyway I used your framework to write a Sync-Framework provider (SkyDriveSyncProvider) which leverages the Sync Framework 2.1 and the built-in FileSyncProvider to support synchronising between the local file-system and SkyDrive.
As soon as I've ironed the major bugs out and got something workable I will upload to CodePlex.
Thanks again and keep up the good work!