Go to http://www.for-evan.com. His death is evidently, ever so tangentially related to the movie “AI” as it’s a large chunk of the publicity for the film.
It’s a really complex thing, and I’m too tired to explain it properly, but it’s kinda like the Michael Douglas movie The Game, almost exactly like the game Majestic, and really, really intricate.
It’s worth checking out for the sheer cool value of it.
Strange A.I. Sites Online' also has some good info on the conspiracy.
Have fun. 
Is this another Blair Witch thing?
Bingo! But it’s really, really well done. Well worth checking out.
I never saw the Blair Witch site (which is a shame for it was reportedly far better than the movie), but I have read a news article that said that this is far better than the BW site. For one thing, it makes absolutely no pretense at being real (the supposed murder takes place roughly 40 years from now), and is a lot more interactive (unless the BW site had phone numbers you could call/email and people to call/email you back).
It’s more like the X-Men site, with the whole Mutant Watch site, but a million times more intricate.