Exchange Point member lists

I have a quick question for the group. Has anyone attempted to keep a compiled list of major exchange points (incl. NAPs) and their members? The information seems to be, by and large, freely available at each EP website, but as far as I've seen each peering coordinator compiles his own list of potential peers. I've just been doing this myself, and it occurs to me that dozens of others must have gone through the same effort. Anyone have any information on such a list? - Jeb Linton