Long Zheng noticed two user interface elements in Windows 8 Explorer that hints at some new file syncing and sharing features

Since these functions appear to be dormant in this particular build, I can only speculate “Sync” would offer functionality similarly to Windows Live Mesh to synchronize folders across computers. On top of that, “Web sharing” might enable SkyDrive-like functionality to make their files and folders accessible through a web URL, for easy sharing with friends and family.

  Windows 8 Explorer teases file syncing and web sharing