Doug Tidwell is a Senior Programmer at IBM. His job as a Cyber Evangelist is to help customers solve business problems with new technology. He was a speaker at the first XML conference in 1997, and speaks regularly on XML, Java, security, and Web servivces topics around the world. At his appearances, he rarely fails to mention that he is the author of O'Reilly's book on XSLT (ISBN 0-596-00053-7) and a co-author of O'Reilly's book on SOAP (ISBN 0-596-00095-2), both of which make lovely gifts. He holds a Masters Degree in Computer Science from Vanderbilt University and a Bachelors Degree in English from the University of Georgia, and can be reached at dtidwell@us.ibm.com.