Developer reply by Josh Geenen
Rated 1 out of 5 stars
No stars from me, just one to show I rated the add-on. Despite the huge number of positive reviews this has been a disaster for me. At one stage I had over 25000 contacts on my Google contacts webpage. I traced this problem to this add-on which kept on generating huge amounts of duplicate contacts in the synch process. After removing this add-on the problem was solved. Coincidence?
This review is for a previous version of the add-on (0.3.3).You need to start synchronization with a blank address book. If you start from something that was already synchronized with or imported from Google you can end up with duplicates. I used to detect duplicates and merge them but it was too slow and people complained. If you sync the same address book with the same Google account using two or more synchronization add-ons you will get a ton of duplicates. Removing either of those two add-ons will fix the problem, so no, it isn't a coincidence.
Josh
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