Every software professional has an interest in technology adoption. In the short term, technology vendors want to sell their products and services; in the long term, they want to retain their customers and expand their success. IT departments want to contribute to the success of their organizations, to whatever extent that software can help, and maintain a good relationship with their customers, both internal and external. Adoption, however, is not something that software professionals can control in even the most hierarchical organizations. Therefore, their success depends on an important form of contextual knowledge: the patterns and anti-patterns of technology adoption among their customers.