As a MEMBER of Grey's gaming group, I just want to distance myself from a couple of his comments. I've subscribed to Dragon since dang near time began, and have had more than one discussion with Greymarch about its validity. I still remember pointing at the text on the cover..."It says it's official RIGHT HERE!!!" And that was only a month ago. Half of the regular group has always been in favor of using materials from third party sources...half aren't. Simple as that. It's just usually not worth the arguments, and, to be perfectly honest, it would be a little unfair for me (or the DM, for that matter) to pull some rule or kit or class from a source that not everyone has full and equal access to. I know I'd be mad as hell if the DM pulled something from an obscure third party source that ended up causing some serious imbalance in the game, and I'm forced to purchase the material to keep up with the Joneses (which, even if it was loaned to me, I don't have time to peruse). And I know the DM would be unhappy if I suddenly cast some obscene spell from a book he's never even heard of.
The DM does not rule the roost in our games. He makes decisions, and sometimes he has to pull rank, but he knows damn well that everything better remain fair or people will walk. Power mongering DMs do NOT interest us, and anyone who is part of the DM's Way or the Highway school needs to understand that saying "whatever the DM rules" is NOT going to satisfy Greymarch because that's not what he's asking.