Google Address book syncing... avoid chaos?

Exporting your contacts that are currently on gmail's My Contacts, importing them into Address Book, then go over the emails/phone numbers etc and make sure first names and last names are correctly filled in, along with any other information you'd like to have on a contact. Re export those addresses to gmail, then sync.

This can be done many ways, but the idea is that you want to get one good list of merged contacts.

This is all a lot easier to do too if you can export your contacts and then edit them in something like excel, and then re import them after you have made adjustments.