Originally Posted by
Adam Smith
am I the only one who's surprised that they're allowing this Rakuten message thing (which I had never heard of until this thread) but not Signal, which seems to be pretty popular?
I don't use Viber, but I have seen people use it (probably more so for voice calls than chat messages). According to
wikipedia, as of Dec 2016 Viber had 800MM registered users, apparently mostly in Russia, Ukraine, Bulgaria, Greece and Serbia. Go figure. I guess it is a popular service.