Messages: how to easily combine multiple buddies into one Address Book card

Messages combine multiple buddies
If you select more than one contact in iChat or Apple’s new Messages beta for Mac (hold ⌘ or ⇧ when selecting multiple people in your Buddies list), the Buddies > Add Buddy command becomes Assign Buddies to One Address Card. This makes it easy to combine multiple usernames for the same person into a single card in Address Book.

As with any time when you’re tinkering with sensitive information you’d rather not lose, it’s a good idea to backup your Address Book contacts, be it with Time Machine through your Mac, iCloud or Google sync, or however else you roll.

via Jordan Running