Although there is debate over the exact date it started, on November 02, 2000, a person calling themselves Timetravel_0, and later John Titor, started posting on a public forum that he was a time traveler from the year 2036.
One of the first things he did was post pictures of his time machine and its operations manual. As the weeks went by, more and more people began questioning him about why he was here, the physics of time travel and his thoughts about our time. He also posted on other forums including the now non-existent Art Bell site. In his posts John Titor entertained, angered, frightened and even belittled those who engaged him in conversation.
On March 21, 2001, John Titor told us he would be leaving our and returning to 2036. After that, he was never heard from again. Speculation and investigation about who John Titor was and why he was online continues to this day.
Although it may be easy to dismiss all this as science fiction, most people who read his posts agree that there is something very haunting about John Titor and what he said. In addition, and open to more debate, he also made a series of predictions and comments that eerily seem to be coming true.
Unfortunately, I never spoke directly to John Titor but there are many out there who have and continue to wonder about their experience. As you get deeper and deeper into the story, you will find his posts, links to other sites about him, downloads and speculative information attributed to him after he left. I have taken the posts and organized them by date and subject. My editorial work is copyrighted but the unedited posts and the people who experienced it are in the public domain can be found on other sites listed inside.
As you read, please try to keep two things in mind:
1. John appeared to answer nearly every question that was asked of him over the 4-month period he was online. Because of that, many people neglected to read the previous posts and asked similar or exact questions he had already answered. It may offer a glimpse of what a time traveler goes through when having the same conversation again and again.
2. These posts were written before 911, the Discovery accident and the second gulf war. Many people believe John may have known of these events and dropped clues without actually referring to them. It’s also widely agreed that he made several predictions about future physics discoveries that have materialized as he stated. – [Source]
Thanks to: http://www.philosophers-stone.co.uk/