Bruce "Tog" Tognazziniis a principal with the Nielsen Norman Group, the "dream team" firm specializing in human-computer interaction. Tog was lead designer at WebMD, the super-vertical start-up founded in February, 1996 by Jim Clark, founder of Silicon Graphics and Netscape. Before that, Tog was Distinguished Engineer for Strategic Technology at Sun Microsystems. During his 14 years at Apple Computer, he founded the Apple Human Interface Group and acted as Apple's Human Interface Evangelist. Tog has published two books, Tog on Interface and Tog on Software Design, both from Addison Wesley, and is currently publishing the free webzine, "AskTog."