Disaster on the Clearwater Pre-Orders Get Free Color Posters!

I welcome your suggestions re how I can best spread word of the approaching release (on Nov 5th) of the  short 99-cent ebook "Disaster on the Clearwater: A Real-Life Account of Rafting Beyond the Limit."  One idea I'm trying is giving free posters to everyone who emails me confirmation of their pre-order--here's the gist with