Back in July, the SkyDrive team introduced us to placeholder files, or “smart files”, basically image and document thumbnails which show you what’s on your online SkyDrive without actually saving a copy of the entire file on your hard drive. Smart files make syncing and storing files easier, and can be essential when using a low storage capacity tablet like the Surface RT I’m using, allowing you to see what’s on your SkyDrive but not using up precious disc space.
