Former TUAW-writer (but forever in our hearts) David Chartier tried using OS X's built-in Address Book sync to Google Contacts and had a very bad experience which ended with him turning it off almost immediately. I had a similar-but-different bad experience. In my case, OS X seemed to simply stop syncing to Google altogether, despite the fact that the setting was still enabled.
Some of the difficulty is due to the fact that Google has
