Over the last 5 years, I've used FolderShare, Live Sync, Live Mesh, and Dropbox. The first three were made by Microsoft, and they all had significant data corr

Over the last 5 years, I've used FolderShare, Live Sync, Live Mesh, and Dropbox. The first three were made by Microsoft, and they all had significant data corruption issues where from time to time files would simply disappear. I've never had that happen with Dropbox. So Microsoft has made three attempts to do what Dropbox does and has still not succeeded. I think there's more to it than what you're proposing. Specifically, I think you're missing key ingredient #5, file conflict resolution.