"We all know how traditional book reports work: read a book, then write a summary to prove you read the book. I have had to drag them out of my students in the past and can relate because teachers had to drag them out of me. So what is a Book Trailer? simply an advertisement for a book. Like a movie trailer, it highlights story elements without giving everything away to entice your interest."
Via John Evans, Lisa Johnson , Petra Pollum, Julie Millan