Everyone analyzes his first name, Sato (聡). It is sometimes interpreted as "wisdom". But what about Nakamoto (中本). My Japaneese is not very good, but I read that as "middle root" or "inside originator". Something like that.
And of course, 聡中本 is a common name.
Or if you don't use predicates, inside book, which leads me to the next BTC conspiracy theory: Satoi naka ni hon = Wisdom inside book. By dropping the "i" after Sato (Satoi = wisdom), and dropping the predicate "ni" after naka(inside), we get Satoshi Nakamoto by certain readings of the kanji (I don't have a knaji keyboard, too lazy to get symbols). Wisdom inside book = someone who wrote a paper on BTC... CONSPIRACY!!