The rating here is primarily for the value of this book, smartly put back into print.
Propaganda, though written in the late 1920s, is an excellent resource for a citizen in general. This manual, a seminal document, is a key resource on the thoughts and workings of the public relations industry, then only a speck compared to what it is today. Everything from corporate PR to advertising in general has basically internalized what is covered in this book in order to serve those institutional functions that mold the public's mind.
This is all related to the 'manufacture of consent', something that Chomsky, who writes a good intro here, and Ed Herman explored in depth in their book 'Manufacturing Consent' where they lay down a Propaganda Model.
This is a huge topic for Americans, period. While media and their role, and their 'slants' is a hot topic (sometimes even within the media, but to limited scope of discussion) this book is a straightforward reprint of the PR industry manual. It's no 'secret'--it's more like company policy. It's far more illuminating than the latest pundit book of the week, discussing, among other things, the 'liberal' media, say.
Don't let the intro or its author derail you from reading this--this is nothing more than a mini-bible on how to manipulate the masses in an institutional framework (media, PR, government, etc). There's nothing really controversial here, since this is basically a historical document that still holds up after decades. Highly recommended.