Information on the Chobits' world

Despite the similarities that much of the world of Chobits has with our reality, there are still some differences that should be noted and explained. I actually haven't figured out most of the answers to most of the questions, but will try to give as complete of a guide as possible, of course updating when I have more information.

What are Persocons?
What exactly is a Chobit? and what makes them so special?