UUWiki uses the same copyright practices as Wikipedia. All content is licensed under the GNU Free Documentation License.
Note, when editing a page, the UUWiki copyright notice at the bottom, below "Save Page":
Please note that all contributions to UUWiki are considered to be released under the GNU Free Documentation License (see UUWiki:Copyrights for details). If you don't want your writing to be edited mercilessly and redistributed at will, then don't submit it here. You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource. DO NOT SUBMIT COPYRIGHTED WORK WITHOUT PERMISSION!
For extenisve explanations and pointers to discussions, see Wikipedia:Copyrights