"While the term open source has been used loosely to refer to a number of software development trends, there's a big difference between open-source software development and open-source collaboration. Open-source software has succeeded in part because of its innate order and structure -- rules and standards that developers must adhere to so that their code will be readable by everyone. Wikis, in contrast, are based on words and perspectives, not code, and there are no barriers to entry."