Google and Opera have been offering bookmark sync for a very long time, Internet Explorer, well, didn’t. Windows Live did have a favorite sync option if you used the IE Toolbar but it never worked and in simplest terms, sucked as a feature.
With Windows Live Wave 4 Microsoft is getting its act together. According to a screenshot on LiveSide, Live Sync in Windows Live Wave 4 will have sync for Internet Explorer and Office. Screenshot:
For Internet Explorer, browser bookmarks will be synced. For Office, your email signatures and templates will be available on any PC you have Sync installed. Further more, Sync will add ability to remotely control your PC. Screenshot: