Wiki’s were hot a while back, but I do not hear that much about using them these days. Too bad! The wiki concept brings two critical aspects of collaborative learning together. The first is dynamic exchange. When one creates a wiki entry, it is an invitation for upgrade. This anchors the conversation — something few platforms do. The second is accountability for quality. A person creating a wiki entry knows that it will be place din the public domain and used (rather than just consumed and forgotten).
Here is an example of how wikis can be used in education.