Summary: Certainly a useful project that promised to deliver a concise overview of Christianity in America. It is clear and concise indeed, but fails in its informative purpose on the side of accuracy. The entries are outdated and inaccurate, as I have had the opportunity to verify personally (i.e. at my own expenses). So, the information you glean from it, although concise and easily found, will not be sufficiently reliable to be be used with confidence. It is, in other words, a tool that promises to save you work in your research, but misleads you, creating double work for you instead: you still need to do your own research, but in addition you will also have to go back and correct yourself in what you stated on the basis of its entries. I would rather avoid it completely. A book of this nature is bound to be consulted not so much for the major trends in Christianity, but primarily for the lesser known branches of American Christianity... yet that's exactly where the dictionary is most lacking in accuracy.