Answer:
It is the electronic version of junk mail or a salty meat in a can.
What is it something that you always have but you always leave behind?
I have legs but walk not, a strong back but work not. Two good arms but reach not. A seat but sit and tarry not.
A hole in a pole, though I fill a hole in white. I'm used more by the day, and less by the night.
What goes through a door but never goes in. And never comes out?
Walk on the living, they don't even mumble. Walk on the dead, they mutter and grumble.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?