13/20 posts clearly have no idea how to play them.
It's LITERALLY the same thing as a normal Castings. The only difference is you private message people to stay alive instead of talking in public. I don't want to talk to some of you people, so I can be selective in my Castings in who I talk to in 20 posts.
PLUS, you can keep easier track of when updates show up because the public chat amount goes up each time there is a pop-up.