Rogers Cadenheadis a writer, computer programmer, and Web developer who has written twelve books on Internet-related topics. He is an application developer and he maintains the Cruel Site of the Day and several other popular Internet sites that receive more than 7 million visits a year.
Tom Bunzelis a technology coach, giving one-on-one instruction in PowerPoint and presentation skills. He works with well-known speakers and educators on their presentations, and specializes in multimedia and rich media production. He has appeared on Tech TV as "Professor PowerPoint", and writes a weekly column for InformIT. He is the author of SAMS Teach Yourself PowerPoint 2003 in 24 Hrs and Easy Digital Music. He can be found at his website, www.professorpowerpoint.com.