Hitchwiki:License

The GNU Free Documentation License, the license under which The Hitchhiking Wiki's articles are available, is one of many "copyleft" copyright licenses which permit the redistribution, creation of derivative works, and commercial use of content provided its authors are attributed and this content remains available under the GFDL. When authors contribute original material to the project, the copyright over it is retained with them, but they agree to make the work available under the GFDL. Material on The Hitchhiking Wiki may thus be shared with, or incorporated from, resources which also use this license.

This means that the content of the Hitchhiking Wiki is available to use on other sites and media that agree to share it alike. Because of this, the Hitchhiking Wiki is not just for itself. It's for all hitchhikers, and for all hitchhikers' communities.