While I like what that guy is saying (what little of it is written in English), I find the whole story simply not believable. Saying he came here for some kinda virus means time travel in the future is so commonplace that you can jump into a time machine on a whim. He also says "I'll give you a prediction that doesn't affect my time" which is pure bunk. He replies to less than 10% of the comments people leave which leaves 90% of the questions unanswered, he has not made one specific accurate prediction anywhere on his site, more like insight than recalling history. And speaking of that, this guy is rather proficient in providing links to all kinds of websites in our times, considering he's from 40 years from now he sure knows how to surf. If I were a time traveller, I'd say something like "This Halloween at 11:17 a world-shattering event will happen" and quickly dispel everyone's uncertainty.
Lemmie ask you- if you popped into any point in the past, what is the first thing you do?