Answer:
Sometimes I am loud. And viewed with distaste. Poke out my 'eye', then I'm on the front of your face.
The stack just might be sent all over. Full of what's new, yet it's nearly obsolete.
What word has kst in the middle, in the beginning, and at the end?
What has roots that nobody sees, and is taller than trees. Up, up it goes, and yet it never grows.
What I am filled, I can point the way. When I am empty. Nothing moves me. I have two skins. One without and one within.
I can only be played on a windy day