Answer:
I direct you from outer space.
While you were folding a letter you got me. Usually you will do whatever it takes to avoid me but now you can't help but find me.
What can one catch that is not thrown?
To you, rude would I never be, though I flag my tongue for all to see. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.
When is it bad luck to see a black cat?