Ellen Isaacs has been designing software user interfaces for over 11 years at such companies as Sun Microsystems, Excite@Home, AT&T and Electric Communities (now communities.com). She has designed applications for a variety of platforms including Windows, OpenWindows, the Web, and Palm OS. With a Ph.D. from Stanford University in the psychology of language use, Ellen has published numerous articles on Human Computer Interaction (HCI), teaches a workshop designed to help engineers interview clients to gain software requirements, and is currently a Team Leader for AT&T Wireless.