Read Me. Is it a clone or not?

Hello to all Heroes fans in this thread. Today, we've gathered to discuss a very important issue that concerns millions of people in this world. The mysterious Read Me. Who is he, and what is his purpose?
I suggest that everyone share their opinion, backing it up with solid evidence.

Let's put an end to this once and for all, so that we don't have messages like "he needs to be banned, he's a clone" popping up later.