A rapidly evolving reality in the teaching of psychology is the increasing prevalence of entirely web-based psychology courses. The author addresses basic design and testing issues of online courses and presents a frank discussion and evaluation of current technology problems and teaching strategies employed. Data and analysis of testing results from paired on-campus and online sections of an introductory psychology course are discussed, as well as their implications for broader issues of learning and performance. Developing and implementing a successful web-based course requires effective use of existing software and hardware solutions to achieve many traditional teaching goals, together with a willingness to adapt to the new demands, limitations and strengths of the online environment. The development of online classrooms is largely market-driven and it appears they are here to stay.