WhatsApp group.
WhatsApp group.
Avoid this suggestion—it’s not a good plan. You can discuss it in the forums; there’s a PM system available. No personal details should be shown. Have a great day.
I believe there aren't any official options available. Feel free to create unofficial ones, though it might be tricky because WhatsApp relies on real phone numbers. It’s not ideal compared to platforms like Hangout, Razer Comms, or Skype that use emails and aliases.