the ox 10.7.2 have the following features... :
1. iCloud stores your email, calendars, contacts, Safari bookmarks, and Safari Reading List, and automatically pushes them to all your devices.
2. Back to My Mac provides remote access to your Mac from another Mac anywhere on the Internet.
3. Find My Mac helps find a missing Mac by locating it on a map and allows you to remotely lock the Mac or wipe all its data.