Just tried that, it doesn’t add multiple folder to sync to SkyDrive. What it does is add the SkyDrive folder to the library. So if you “Include in Library” Documents, then when you go into your Documents library, you’ll see the SkyDrive folder. It won’t sync your Documents into SkyDrive.
Still haven’t found a way to do multiple folder sync in SkyDrive, as the bullet point in the article states. Maybe it’s referring to the “fetch” feature, which isn’t true sync.
