Mountain Lion Safari Supports iCloud Tabs, Safari Tabs From all iOS and OS X Devices
 

This is a very cool feature from the new version of Safari shipping with Mountain Lion. Clicking the new iCloud tabs button will give you a live listing of open Safari tabs on all iOS and OS X machines - a great way to deal with the problem of switching between your iPad and your Mac.

http://www.anandtech.com/show/5980/m...d-os-x-devices