I've seen the book you're talking about before. It's a pretty nice compilation, though it's in pretty gray territory for copyright.
There's a similar setup for PFRPG, that's through a website, and the guy talks about it constantly on the Paizo boards, (in the rules section and in general discussion, where the Paizo staff patrol regularly), so I don't think it's clear whether these things are good or bad.
Now, if they dropped any proprietary names, I remember reading somewhere that you can't copyright mechanics, only the exact wording of phrases and tables (it was in relation to WoD fanbooks or some such that I came across it). which means if they drop any proprietary parts of spells ("Mordenkainen, etc") and reword any sentences a little bit, then open content or no, the spell is different enough to not get in trouble over.
Also, that book doesn't make any notice of what material has been reprinted, it includes multiple copies of many spells, which I found irritating as hell.
Made it a hell of alot easier a few years ago to print out a specific wizard's selected spells to avoid having to lug 25+ books to the game table though.
It's iffy territory though as is. Particularly in the USA.