Wikipedia:CC BY-SA Compliance

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A number of sites that mirror and fork Wikipedia may not be complying with all the terms of the CC BY-SA.

Please see Wikipedia:Mirrors and forks for instructions about adding new sites.

At the bottom of this page there is a section named "Former content users" that is used for websites that at one time hosted Wikipedia content, but no longer do. This should be checked periodically.

Problematic sites sometimes get listed on the mirror list without ending up here. So check the mirror list too: (Numbers) ABC DEF GHI JKL MNO PQR STU VWXYZ All

Also note Wikipedia:GFDL Compliance, which is still the appropriate place to list sites that do not use CC BY-SA-only content. Remember that the dual licence which applies to all new editor generated text since 15 June 2009 means that a site only has to comply with one of the licences. So check for compliance with either licence and make a note of which licence the site is most compliant with. The exception is text imported from external sources which could be CC BY-SA licensed only.

Descriptions of the categories
Undetermined or disputed Low/None Medium High
Either more research is needed, or it is disputed. Fails in a very significant way, usually by lacking mention of Wikipedia, the CC BY-SA, or both. Makes an effort to comply, usually including mention of Wikipedia and the CC BY-SA. Approximates our licence; should mention Wikipedia,[1] should link to original article (or stable equivalent),[2] maintain copyright,[3] license,[4] and warranty[5] (see Wikipedia:General disclaimer) notices and include or link to license.[6]

Undetermined or disputed[edit]

In this section, please add new entries to the bottom of the list.




Former content users[edit]


  1. ^ Attributing Wikipedia required by §4.c of CC BY-SA 3.0 since Wikipedia is the applicable "publishing entity"
  2. ^ Linking to article required by ("the URI, if any, that Licensor specifies to be associated with the Work") §4.c of CC BY-SA 3.0 and Terms of Use
  3. ^ §4.3 - "keep intact all copyright notices for the Work"
  4. ^ §4.a and 4.b - "keep intact all notices that refer to [...] License"
  5. ^ 4.a - "keep intact all notices that refer [...] to the disclaimer of warranties"
  6. ^ §4.a and 4.b - "You must include a copy of, or the Uniform Resource Identifier (URI) for [...] License"