It was actually the other way around for me, where I knew about the John Titor Chronicles, before I ever knew about Steins;Gate, and I was kind of amused by how it got included into that plot (totally called who the character was before it was revealed). I always found it kind of funny how there got to be this kind of conspiracy theory about the stories along the lines of thinking it was really true, because people took something he said about the New York skyline looking different as a prediction of 9/11 since this was published before that happened, kind of like Nostradamus's predictions being argued to be true after the fact, with some real stretching in some cases. I'm kind of starting to find it a lot less funny. I'm not saying I really think there was an actual time traveler, it's just kind of disconcerting in some ways that someone's internet story managed to hit kind of close to the mark.