Ever wonder if book trailers make a difference?

I have. Especially since I have a book trailer for my YA novel Scars. My thinking was that a book trailer can help make the book–the title or the author or both–familiar to potential readers. I didn't know, though, if anyone would buy the book after seeing the trailer.

I was in a bookstore yesterday, and spent, ahem, a lot of money on books. And one of the books I bought–that I grabbed down from the shelf as soon as I saw the cover–was It's a Book by Lane Smith. I instantly recognized the...