Keith's note:If you visit the website of author Charles Justiz you will see that a photo of an astronaut holding his latest book on the International Space Station is featured. As I mentioned last March, when this first appeared online, I was not aware that authors could get NASA astronauts to do on-orbit promotion and commercial "product placement" on the ISS unless there was a clear EPO tie-in, Space Act Agreement, etc. The webpage that originally featured this product endorsement was eventually pulled offline after I took note. But now the product placement photo is back. I guess the rules have changed.
Product Placement on the ISS (Update), earlier post