I have used them when the app I want is not available in repos to apt install. I use a GUI called gnome-software that lists available snaps and flatpaks to find them.
I really don't know what's safer/more secure/better, using random ppa's or snaps/flatpaks when it's not already in repo, but certainly using a gui like gnome-software makes installing anything I ever hear about easy. I've had no problems. I think Discord is one of the apps that I use without issues from snap... but basically once it's installed I forget how I installed it so can't think of what else might be snap.
Of course if the official site of the app has a ppa listed I'll use that over snap/flatpak.
Last edited by enigma9o7; 11-20-2018 at 12:26 PM.
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