Not a book site like booklikes and goodreads, but BookDaily.com offers organized samples of new books to readers (and helps authors promote their books via the samples and other features).

Older Publisher Weekly article http://www.publishersweekly.com/article/CA6665072.html?q=bookdaily.com ; links to more press at http://www.bookdaily.com/reference/press .

I'm not an author so clueless about any fee structures for listing/marketing your books with them.  No clue about size of mailing list or number of site members.  What looked attractive to me as a reader was the organization, the categories (also what I liked about eReader News Today, Pixel of Ink, etc.).

In my book, Ad Infinitum, reincarnation is a means to an end, a tool used by generations of humanity to pass along knowledge through the commonality of our sentience, which binds all of the higher orders of life. We are all of us made from the same cosmic and multi-universal material and we all resonate with our own unique signature, a bioelectric wavelength as unique as our DNA that literally pulses with life. It is the Eternal Resonance.

Those wavelengths, once accessed, transcend spirituality and connect us through as pure a natural process as could possibly exist. So, the passing on of those signatures through time by the reincarnation of what we, for lack of a better term, call souls, is a natural thing that happens regardless of our intention or beliefs.

It isn't spirituality; it's life.