I'm sure some people have already thought of this (is it forrest who said he was making a map of the runestones?), but WHERE ARE THE RUNESTONES?
So far we know of the following:
Dispersal: probably somewhere near Alric's original homeland. Now I can't remember where that was. Damn.
Shade Dispersal: Near where the shades had a lot of access to. I'm thinking somewhere in the untamed lands. Soulblighter had access to them, and so did Balor. They created the shades, so the shades had those spells.
Unlife: Si'anwon? The watcher (according to the book) never found the dream there, but maybe he just wasn't looking hard enough.
Rotting mist: In the crom Cruach, which is likely somewhere near the dwarven areas since the ghols live near there.
Gotta go. Find out where the other dreams come from.