Address Book integration
Adium can use information in your Mac OS X Address Book ("AB") to enhance the display of the Contact List. This is automatic by default; Address Book integration is configurable in the Address Book section of the Advanced pane of Adium's Preferences.
Names
By default, Adium will import contacts' names from the Address Book. It does this using the
For example, if you have user "jdoe" on your
By default, Adium imports nicknames and does not import middle names. You can change these settings, as well as the order in which names are displayed (First Last or Last First), via the Address Book Preferences.
Images
Adium can import photos from the Address Book and use them as your Adium contacts' contact icons, or it can export contact icons from the contact list to the cards in the Address Book. Again, the matching of cards is determined by IM usernames. All of this is turned off by default.
In the Preferences, you can set whether to import images from the Address Book ("Use Address Book as contacts' icons") or export images to the Address Book ("Overwrite Address Book images with contacts' icons"). If you have Adium set to import, you can also allow it to override the Adium contact's icon using the Address Book photo.
If you enable both, your Address Book will be populated with the icons your contacts set for themselves, when possible; contacts who do not set their own icons will be displayed with any icon you set within the Address Book.
Combining contacts
If you list multiple instant messaging names for a contact on the same Address Book card, Adium will automatically combine those contacts into a single Combined Contact. You can also do this manually (see Combining contacts), and you may disable the feature via the Adium Address Book Preferences.
Of course, if you do not have very many IM usernames listed in your Address Book, this feature won't do much for you. Filling out your Address Book has other benefits, as Apple Mail, iCal, and Quicksilver integrate with it as well.