During discussion with some friends, it was brought to my attention that not everyone is aware of author-friendly book groups on Facebook. My experience has been that the folks there are receptive and supportive of authors promoting their books.
A few things about group etiquette:
1. Read the About section of the group and follow their rules.
2. Participate in the group. Contribute things and recommend books other than your own.
3. Don't over promote. You'll irritate the crap out of the readers you're hoping will buy your books.
Lecture over. FYI, these are not writer's groups. They are reader oriented groups for individuals interested in books.
Here's a list of some of the Facebook groups that I'm familiar with:
There's an ebook in the room
Authors & Books & Readers
The Book Nest
All About Books
Passion For Books
With Your Coffee
Books I Love to Read
BOOKS, READERS, and AUTHORS
Writers and Readers Unite
Books, Books and more Books!!!!
The Wolf Pack: For Readers who like a good howl
(I loooove these guys!)
Romance Novel Junkies
If there are any I've missed, please leave a comment with the url!