Your book blurb is very important, not as important as the cover but a close second.

I was at the Sterling North Book Festival this weekend selling my wares and after people stared at my covers for a few seconds, they picked up a book and read the back, even if I was talking to them.

Claude and Mathew Kadish give us some ideas for the piece on the back of your book, or the description for you ebook online (same thing). I agree with all the suggestions made (though I think 5 paragraphs is too long – 3, maybe 4 is about right) and I like the person’s suggestion in the comment section – go to a bookstore or library, look online at the book descriptions/blurbs on the back of the book for best-selling titles in your genre and take notes. Imitation is the best form of flattery!

I also think the open lines need to hook the reader, as well. Think – a jazzed version of your ‘elevator speech’ about your book.

Here is their list:

Claude Nougat’s Blog : How To Write A Smashing Book Description for Your Book:Tips from a Pro.