Courtesy of morgueFile.com |
If it is in the media, people are attracted to it either because they are really interested in reading the book for the sake of reading it; or, they want to see what all they hype is about so they read it out of curiosity.
If a book is made into a movie, it usually is on the best seller list just before the movie is released because people want to read it before watching the movie; and, it maintains best seller list until after the movie is released because it did well in the box office. However, the amount of time it is on the best seller list depends not only on movie trailers, who is in the movie, and how good the movie actually is (according to box office reports).
The end all and be all of a books success is how good the book actually is (at least with very few exceptions). As Oprah continued her book club, not all of the books did well via best seller lists. If a book was good, it did really well. However, not all people will fall into the 'Oprah or Hollywood loves this book so I will, too' mentality. There are some of us who have our own mind and make it up on our own.
That being said, I have been led to many great books (in my opinion) because I was notified that they exist by popular media. Those books deserved their 'best seller' status.