Answer:
When set loose I fly away. Never so cursed as when I go astray.
Neither bought nor sold but more valuable than gold. It is built but not by hand. What is it?
What can you share and still have all for yourself?
Round as a button, deep as a well. If you want me to talk, you must first pull my tail.
My head bobs lazily in the sun. You think I'm cute. For my face is yellow my hair is white and my body is green.
A first job for many kids, this could be described as "Media Distribution Management.