Jackie asked me to start this post again so here it is.
I was listening to the CD version of "Eats, Shoots and Leaves" and they mentioned that hyphens can be correctly used to prevent misunderstanding even where not grammatically required. e.g. the blue paint-jar. But what about the other way around?
The following day our local paper included information from an "anti-child sexual exploitation group."

Do you think I should send the editor a copy of the CD?