I've just been through the whole sending out copies for review thing - turned out there were a few sites that actually had lists of them. You may find these useful:
Simon Royle's list of indie reviewers (which notes what genre they like):
http://www.simon-royle.com/indie-reviewers/
Frida Fantastic posted this list:
http://indiesfreviewers.wordpress.com/
Indie Book Reviewer has a very nice list:
http://indiebookreviewer.wordpress.com/science-fiction/
http://indiebookreviewer.wordpress.com/fantasy/
And there's another ridiculously big list here, broken down by genre:
http://hampton-networks.com/
And finally a list of reviewers who are just indie-friendly:
http://thenextbestbookblog.blogspot.com/p/indieself-published-supporters.html
Stating the Blindingly Obvious dept: you're going to need to keep a record of who you send your queries to because you'll end up losing track otherwise. Bookmarking the sites in folders according to category is good, but nothing beats using a spreadsheet.
Also, be prepared for long waits for review: some people have six month waiting lists. Others just close down submissions for a while after they find themselves inundated. Many decide not to take either self-published or ebook submissions. You'll just have to wade through and figure it out, one site at a time...