Best Online Communities & Groups for UX & Product & Business discussions - Facebook groups

Mixergy Premium
https://www.facebook.com/groups/1748351532109686/

Hackathon Hackers
https://www.facebook.com/groups/hackathonhackers/

Bots
https://www.facebook.com/groups/chatbot/

The Startup Chat Mastermind Group
https://www.facebook.com/groups/TheStartupChat/

The Product Group
https://www.facebook.com/groups/theproductgroup/

HH Product Management
https://www.facebook.com/groups/hhProductManagement/

The 7 Day Startup
https://www.facebook.com/groups/592264044218722/

London Statups
https://www.facebook.com/groups/LDNstartups/