Book trailers

During the week, the book trailer for Once Confronted was completed. Here it is, in case you missed it:

Making trailers for books is still a relatively new thing and I don’t think a lot of authors do them. So far, all my books have had trailers, with The Heir having two, bringing the total of the trailers I’ve got for my books to five. They’re fun to make, although they take a lot of effort. Just finding a basic idea for the trailer can be tricky, and then you’ve got to work out content, sequence and music, all the while trying to make sure you’re abiding by copyright laws and not taking anyone’s work without their permission.
The four trailers for the Veridon trilogy were done by me, so they’re fairly basic. However, since I have a husband who’s a geek, he wanted to try some new stuff this time, especially since he had a new computer program to play with, so that’s why this one looks different from the others. I’m pleased with it and I definitely like its look.
However, I wonder how useful book trailers are. I know there are authors who don’t think they’re worth the time, effort and money they cost, and I know a lot of readers don’t even seem to know they exist. Do you think they make a difference to how a book is received? Are you more likely to share a book trailer than other details about the book? Have you seen other book trailers around? If you have a favourite book trailer, feel free to put a link in the comments at the bottom of the page.