Micropedia

Definition
A tiny, focused version of Wikipedia. The range of content is restricted to a pre-defined domain. Each entry is a definition or at least a description of a single entity. Example: the now-defunct EdGamesWiki.

When to Use
Within an organization, a micropedia can be a useful way to capture knowledge specific to the organizations interests and activities. In a course, a micropedia can organize learner explorations of the literature and serve as a reference once it arrives at a certain size.

Participant Actions
Participants contribute entries and elaborate on the entries of others. Data can come from outside, or the participants can use the wiki to capture and communicate their own expertise.