Reply to post #4
(show post):
You may already have seen these, but in the event you haven't, here's some further food for thought:
http://www.slideshare.net/GoodreadsPresentations/idpf-2013-goodreads
http://www.forbes.com/sites/davidvinjamuri/2013/03/29/three-hidden-benefits-of-the-amazon-acquisition-of-goodreads/
http://www.salon.com/2013/03/31/amazon_buys_goodreads_were_all_just_data_now/
The Goodreads slide presentation in particular shows how directly GR activity affects Kindle sales -- which was the driving force behind the purchase.