i just noticed something in reading satoshi's old posts on the cypherpunk mailing list: he uses two spaces after a full stop, not just one. i don't have hard data, but i believe this practice correlates strongly with age. that is, i suspect very few people younger than 35 have learnt to type that way.
Arent there supposed to be programs that now claim to be able to anaylse and detect with reasonable accuracy if a piece of content comes from the same person as another piece or not?
In other words, get hold of some written material from eg Max Keiser and other suspects, and put it through the program together with Satoshi's posts and see how they compare.
Wonder if this program is available somewhere on the web, either as a web based service or else as a downloadable install...