It's from Joe Clark, a Canadian blogger, who writes:
A blog is a form of exteriorized psychology. It’s a part of you, or of your psyche; while a titanium hip joint or a pacemaker might bring technology inside the corporeal you, a Weblog uses technology to bring the psychological you outside of it. [emphasis mine]Clark is articulating the Romantic view of writing as expression, an exteriorisation of an already fully constituted interiority (my inner self, psyche or the "Real Me").
Deconstructing “You’ve Got Blog”
It's a long way from 'identity performance' and 'distributed selfhood'.