I haven't read about the GNC, but I've seen it referenced in various comments.

However, I DID read a compelling thread on who THM could be...

ALERT MAYBE FUTURE SPOILERS IF YOU CLICK

http://www.reddit.com/r/asoiaf/comments/27sjho/spoilers_all_the_hooded_man_in_winterfell_is/




This is actually the thread that led me down the rabbit hole, prompting me to post that other thread

I didn't fully grasp the significance of THM though, because I wasn't aware of the GNC at the time


It's Friday, time to get lost...