They don't like eBooks at all and get upset if you ask the reviewers to post to Amazon for you. If you have hard copy books to send to reviewers and want to get on blogs, it might be worth it. I haven't run a request for reviews there in quite awhile, since my books are too short for them. They require 100 pages, and my photography books literally *can't* be that long because of Amazon and Create Space file limits. Before the new restrictions it was possible to get good reviews from those reviewers that would accept ebooks.