Answer:
What can't you see, hear or feel, until its too late. What shadows love, and shopkeepers hate?
What weaves webs as they grow?
I am so simple that I can only point. Yet I guide men all over the world.
My first is in fish but no in snail. My second is in rabbit but no in tail. My third is in up but not in down. My fourth is in tiara but not in crown. My fifth is in tree you plainly see. My whole a food for you and me.
It flies when it's on and floats coming off.
I am your mother's brother's only brother in law. Who am I?