Answer:
who do you think you know but sometimes you don't
I drive men mad for love of me. Easily beaten, never free.
Has no feet, but travels far. Is literate, but not a scholar. Has no mouth, yet clearly speaks.
The stack just might be sent all over. Full of what's new, yet it's nearly obsolete.
Who is he that runs without a leg. And his house on his back?
Before I grow I'm small. When I'm old I grow tall. When I die I give a mighty fall.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?