Here is my summary (with references to the actual license and license FAQ) to the licensing of wikis using CC-BY-SA 3.0 (Unported).
According to the license, the content of the Wiki's ("The Work") are considered a "Collection" (item 1(b)). This is the context in which the license takes effect. This also applies to the License Grant to reproduce the work.
The license to reuse "The Work" will automatically terminate upon any breach of the license (item 7(a)). This termination applies only to the party that violated the license, so if a vandal removes an attribution notice, only they would lose their license. ref If you lose your rights to reuse the work, you can only get them back if the licensor gives permission. ref
The license is the entire agr…Read more >