The Crimson Room
As an IQ guide, there are 13 items to be found in the room, if you find:
0-6 items, your IQ is very low, you're a total idiot
6-8 items, Low IQ, you are a bit of an idiot
9-10 items, you are normal
11-12 items, your IQ is high, above average.
13 items found and get out of the room, genius! Apparently only about 4000 people worldwide can do it with no hints or tips, although that could just be email myth...
One of the items you find is a piece of paper with a URL on it, unfortunately I think it's in Japanese but all it says on it is "1994".
I understand this has been around a while so if you've already done it and know the answer lay off telling it for a while so others can play.
For the record, I got 11 items before requiring a hint to find the 12th, which then allowed me to find the 13th and escape.
I'll post a hint after a while when I see where peeps are having problems
Good luck