Review for Google Contacts by klubjunk
Rated 5 out of 5 stars
IT WORKS with 24.5.0
why previous reviewer says it doesn't ?...
I just tested it with contacts, and even folder creation.
It instantly synced with my google mail account.
So again, YES IT WORKS with 24.5...
and It works great.
To create your own collections, you must have a Mozilla Add-ons account.