A few questions about: 'Psi-balls'

In the spirit of full disclosure, I am simply going to get this out of the way..

I do not believe in 'psi-balls'.

Having read a bit about them here and there, I have seen a wide range of theories about what a psi-ball is, and what it can or cannot do. I want to get some answers from the horses mouth.. so I am asking those that claim to be able to make psi-balls a few questions..

1. What is the purpose of a psi-ball?
2. Can one see a psi-ball?
3. Can one be injured by a psi-ball?
4. Is it physically taxing to create one?
5. How long can you keep one formed?
6. Can one manipulate corporeal objects with the psi-ball?

Thank you in advance for your answers.

Hank

Come on...

What happened to all of the people that can create psi-balls?

I will also accept the answers to my questions in the form of u2u's if you will allow me to post them in this thread (with your name removed of course).

I am just looking for some answers to a issue that has been confusing me for some time.

Thanks