Your writing style is unique to you as your fingerprint according to a programme on Discovery channel recently. The FBI used document comparison to attempt to trace the anthrax outbreak in America last year but were hindered by lack of access to the suspects past documents. Section of words, range of vocabulary, paragraph indentation, spelling and grammar errors (I had better not commit any crimes I would be far to easy to catch) can all be used to pin a document to its author. This had me thinking, could you tell your regular blog reads authors if their writing was published elsewhere. Anyone up for a spot of experimentation?