I was wondering this as well. I ended up skimming the wikipedia article for John Titor[0].
/* I should note that "John Titor" is a fictional persona of a time travelling man. People made fake posts on multiple forums, some including elaborate diagrams of a "time machine" etc... */
If you scroll down to the "in popular culture" section it mentions that in 2006 none other than the very "Martin Pohlman" to whom your parent poster linked attempted to patent the time machine that John Titor claims to own...
So maybe this Martin Pohlman had something to do with(created?) the fake John Titor persona... Really renders the whole thing pretty un-comical.
Your parent poster could definitely have been a whole lot clearer though.
