http://www.horizoncourt.ca/the-horizon.php

I enjoy wasting time on Facebook, and I like keeping in touch with my friends and family and other writers and Writer’s associations and happenings around my section of the world, but I agree with this blog that endless self- promotion of yourself and your books as an author is totally annoying and a waste of time. I don’t buy books from authors postings on Facebook – rather I buy them from reviews and/or if I like the author.
So hey, if you want to promote your book, list it on LibraryThing or NetGalley and get some reviews. Those will sell your work quicker than telling everyone yourself how wonderful you are.

Let the work speak.