Patterns for successful wiki use
This pattern refers to the common practice of requiring users to register to edit wiki pages, yet not tying the registration to any meaningful authenticator—just to a password. The result is a wiki that is vulnerable to vandalism and wiki spam, is vulnerable to identity spoofing and other things, yet requires users to create a password-protected identity for their first edit and to log on for subsequent edits.
One way is to adopt an Open-Edit policy, allowing anybody to edit the wiki without registering, and employing alternative effective measures to combat spam.
Another is to use a Clean Permissions scheme, such as Permission Granted or Community Write
Another is to provide an incentive for registering, such as a personal profile space, which gives a person space on the wiki to tell about her/himself, and allows them more flexibility in using the wiki than just contributing to the community space.