Are wikis an effective means of communication? Why or why not? Why does it matter?

An effective means of communication should contain two fundamental factors. Firstly, it must provide a bilateral way for people to communicate. That means people are able to express their opinion and to get the responses from others, not just Then, people must have rights to communicate without any limitation or artificial barriers for example to prevent the discussion on politics. Undoubtedly, wikis are effective means of communication. Wikis actually provide people with a collaborative environment for people to communicate. For example, within Wikipedia, everyone have the freedom of contributing their personal knowledge to construct a certain topic. Unlike an internet database, there is no authorized participant, and no centralized or standard information. This is a network that people can mutually share their knowledge and ideas just like people communicate with each others in a society. In other words, this is a process of social networking in digital way. The significant achievement for wikis is to provide a universal base for people who do not even know each other to communicate. Therefore, the range of social networking is widely extended. People can share their thoughts or even can work together through wikis without meet each other like to create an article in Wikipedia. Obviously, this is a progress to global communication and social networking.