I have no idea how effective video trailers are for books, and from the forums I’ve lurked on I don’t think anyone else does either. But they are fun. I just did my first one, a one minute teaser for my new ebook BEACH BUM DELIGHT. You can see it on youtube (http://youtu.be/0etnMJvJ7N4) . I hope you get a kick out of it. If nothing else it was fun to play with sand and sea and sex imagery.
Here is the book cover and it is available at Amazon and Smashwords (and through them all the major outlets, such as iTunes) as usual.
Blair Erotica Books 
wish you success in your new book promotion!
Thank you. I try not to do a lot of promotion beyond announcing new releases or things like that as I don’t care for it when other people do more than that, but discovering new ways to let people know about such things is fun.
Loved the video! Beach Bum Delight looks like a fun read.