Besides, it's made clear that Quirrell never actually visited the place.
Why is that clear? It's a powerfully magical place which might draw someone like Quirrel, and Quirrel's mistake was about whether he had a visa - so he could have gone but not known whether his later cover identity was officially registered or not.
If Grail Wars do occur in this continuity, I'd be very surprised if Riddle didn't visit their site when he was wandering the world looking for knowledge and power.
But I doubt that the reference is anything more than yet another shout-out.
(The HPMOR discussion thread after this one is here.)
This is a new thread to discuss Eliezer Yudkowsky's Harry Potter and the Methods of Rationality and anything related to it. There haven't been any chapters recently, but it looks like there are a bunch in the pipeline and the old thread is nearing 700 comments. The latest chapter as of 7th March 2012 is Ch. 77.
There is now a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author's Notes.
The first 5 discussion threads are on the main page under the harry_potter tag. Threads 6 and on (including this one) are in the discussion section using its separate tag system. Also: one, two, three, four, five, six, seven, eight, nine.
As a reminder, it's often useful to start your comment by indicating which chapter you are commenting on.
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: