In case you missed it, there has been a good bit of hype over the last several months around the launch of the Marginalia Review of Books site. The team of accomplished scholars created this site as an avenue for quality, open-source, book reviews. Below is an excerpt from their about page. Time will tell how profitable this resource will prove to be, but so far looks impressive.
The Marginalia Review of Books (ISSN 2325-8357) is an international review of academic literature from a range of disciplines along the nexus of history, theology, and religion. We publish reviews on the final Tuesday of every month, and a variety of contributions to intellectual culture – including essays, interviews, and op-eds – throughout the month. MROB aims to enhance the quality of the academic book review, to explore the creative possibilities of the web, and to help authors make their work more easily discoverable than in some traditional journals. We hope to see the academic review in historical, theological, and religious studies move closer to the standard of The Times Literary Supplement or the The New York Review of Books. As a purely digital publication, we have been inspired by The Los Angeles Review of Books.