In Europe it's common for businesses to use whatsapp for customer contact and not even be setup to receive phone calls. That despite how unfavorably meta as a whole is viewed. I'd in fact attribute X's steep decline to how much it has become a single message platform and pushed out those niche communities to other technologies.
I still remember my own shock at learning how huge of a Brazilian user base Google+ had years after falling into obscurity in the english speaking world.
I still remember my own shock at learning how huge of a Brazilian user base Google+ had years after falling into obscurity in the english speaking world.