Tim Worstall, a "blog buddy" of my husband's and proprietor of an excellent blog, has edited a book which will be out soon, 2005: Blogged, Dispatches from the Blogosphere. (Some details on the book are here. It is currently available at Amazon UK but not Amazon US.)

It would be especially appropriate for a friend or relative who wants to know "what is this blogging business I hear so much about?"