As a scholar and a writer, I am surrounded by books. I buy books at conferences. I buy books online. A stack of books grows on my desk, and even finds its way onto any horizontal surface in my living room. I identify them from reading the reference list of journal articles. I get recommendations from peers.
One of the services I can provide my peers is to write a book review on one of my most recently purchased books. A review serves to help my colleagues decide whether or not they wish to read the book.