Review for Google Contacts by Honcho1977
Rated 2 out of 5 stars
This would be a killer app if it worked, but unfortunately it's not yet reliable. The synchronization is all a bit haphazard - updates in your addressbook have about a 30% chance of being manifested in your google contacts, and I keep finding duplicates that I thought I had deleted. Can't wait until it works, but I'm uninstalling until a newer version comes out.
This review is for a previous version of the add-on (0.6.33).To create your own collections, you must have a Mozilla Add-ons account.