It's incredible that no one ever found out who satoshi was or who they were. At least, there is no one to confirm whether any of the usual suspects is satoshi. Something tells me that he is dead and hasn't been with us for a long time.
Satoshi Nakamoto in very early days and in topic 3, revealed his name and address but that topic was deleted. There is no information that who deleted that thread. My guess is Satoshi Nakamoto deleted it by himself, not by other admins years later.
Mysterious topic #3Is this the first bitcointalk.org topic?
What happened with topic 1,2,3 and 4?
1, 2, and 4 exist in the staff forum. 3 was permanently deleted at some point (it must have contained Satoshi's real name and address).