Answer:
It is the electronic version of junk mail or a salty meat in a can.
According to the music industry, you can count on a midnight train and the devil to turn up here.
A dragon's tooth in a mortal's hand, I kill, I maim, I divide the land.
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty.
I weaken all men for hours each day. I show you strange visions while you are away. I take you by night, by day take you back. None suffer to have me, but do from my lack.
You use it between your head and your toes, the more it works the thinner it grows.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?