How do you view products that recommend other products inside them. Not full page ads but items like “a good system for generating unique demons can be found in Scribe of Orcus #2”. Does it make it seem like you’ve been sold a broken or incomplete product? Does it matter if the products are produced by someone other than the producer of the book you’re reading?
The reason I ask is I’m taking a first pass at some sections of A Demon Haunted world and I’m inclined to recommend items I use in developing the playtest scenarios (and if I get players the campaign).