Answer:
It is the electronic version of junk mail or a salty meat in a can.
Although I'm not an insect, some people found me very difficult to exterminate. They called me something like 'insane priest.' The first half of my name means the same as 'scrape,' & my last three letters are a metal. Who am I?
Who spends the day at the window, goes to the table for meals. And hides at night?
Dies half its life. Lives the rest. Dances without music. Breathes without breath.
It's in your hand though you can not feel it. Only you and time can reveal it.
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.