The research in this book is authoritative and thoughtful and offers something for everyone. For example, economists will want to know the motivations of people and companies (such as IBM or Hewlett Packard), who give freely of their time to create or improve a “public good.” Not surprisingly, the research indicates that many FOSS developers are motivated both by the creative challenge as well as self-interest, such as enhancing their reputations as programmers, and then take advantage of this effect when searching for jobs. Because both for-profit and nonprofit organizations pay many programmers to work on open source projects, we find there is also some overlap between the free and open source and commercial software worlds.