On machines where you start Steam manually in order to play a game, do you keep Steam running in the background after play session is over? Meaning if you no longer play any game for the moment, and just keep it running to be ready. Or do you close Steam, after the play session?
Oh that. Well you can adjust the notifications for every type of notification in Steam. I also disabled the notification for friends coming on or playing a game. I find it annoying too.