As far as I know, Satoshi is the developer of bitcoin and its component part-satoshi. I can assume that he hides his identity for fear of his life and health, as well as to prevent inconveniences caused by attention to popular and rich personalities
Man, I am starting to think that someone, perhaps Satoshi/Mike Hearn himself has created spam bots that just spew nonsense on any topic that is created or bumped to the top of the queue that has anything to do with or mentions Satoshi.