How to use (sync) Apple Address Book with multiple accounts from Google?
There are third party, paid, services available to sync multiple Gmail, Address Book and Exchange accounts. I can't speak to the effectiveness of any of them. I signed up for Soocial and then decided I didn't care if the two gmail accounts I use had out-of-sync address books -- I just sync one with my Address Book and iPhone now using the built-in sync manager in OS X.


Soocial
Sync'Em