The US will enter into civil war in 2015. John Titor travels back in time from 2036 to today to go after some obscure piece of computer equipment. John stops by on the internet to let people know and posts his stories about life in the future.
I remember hearing about this several years ago, but had forgotten...I didn't know there was an entire website.
They were talking about him on Coast to Coast overnight (the show started by Art Bell). His predictions were much like Nostradamus or Biblical prophecy, they make plenty of sense (or at least seem to) after the incident.