With almost any kind of information system, user motivation to use the system means success or failure to the engineers, business analysts, interface designers and other professionals who have contributed to the design and implementation effort. If you want your project to succeed, you need to have a grasp of barriers and drivers to user adoption of systems. For Facebook, we will begin this study by scoping the factors that detract or add to user motivation. When you come to build your own systems, you will need to do the same, keeping a keen eye on human/computer interaction and factors that work for and against success
