Tim Challies, a self-employed web designer, is a pioneer in the Christian blogosphere, having one of the most widely read and recognized Christian blogs anywhere (www.challies.com). He is also editor of Discerning Reader (www.discerningreader.com), a site dedicated to offering thoughtful reviews of books that are of interest to Christians. He is author of The Discipline of Spiritual Discernment, published by Crossway.