"The feature, which appears to be only available for “Linked” Windows accounts (presumably to Windows Live), allows for users to “roam” to different computers and devices (*cough* Windows Phone) with their various settings and configurations, automagically applied. The range of settings for roaming include the desktop wallpaper, Aero glass color, accessibility options, language options, applications settings (probably only for AppX packaged apps), Windows settings and WiFi profiles and Windows-managed passwords." - LANjackal