Signal inherits some of WhatsApp's limitations though. It requires that the primary device be an Android or IOS based smartphone with an internet connection; and your identifier is your telephone number, which has the same privacy implications as WhatsApp. With the centralised server model choosing Signal over WhatsApp is basically betting that Open Whisper Systems won't monetize your data, or won't be bought out by some bigger fish.

Why can't I use a messaging service from my desktop without having a smartphone with pre-approved operating system nearby?

Signal seems to be growing here in Toronto as well.

I'm virtually ostracized by my lack of social media engagement so my list is short, but I encouraged my girlfriend to pick it up after the more public Facebook fiascos as she was a heavy Messenger user.

As soon as she installed it, she found a good selection of her contact list was already on there, including her company's owner. Her major concern was keeping in touch with friends and family in Montana, California, and BC. She's still stuck between the two apps because of coworkers, employees, and other holdouts, though.