Hey, after my testing. I'm sure that facebook group still not dead . ^_^ These week, I've joined more than 40K facebook groups using about 500 facebook accounts. Most of the groups are belong to English groups,covered almost all topics. When I post my product link to all the groups , got tons of traffic ^_^. I've never get such traffic before even using facebook and google ads. Good luck to your guys whom want to drive free traffic from facebook.