Yeah, I was going to mention this.
Thing is, there are clauses on both ends that prevent the verbatim copying of content over to Jagex's Wiki.
CC-BY-SA means you have to attribute the source with links (where possible), and Jagex's Wiki has a stipulation that all content you submit is your own.
If there is a ton of CC-BY-SA violations occurring on Jagex's Wiki, I expect some bad blood between Jagex and RSWiki at first. But ultimately they'll resolve it.
As soon as an editor on RS Wiki hits "Submit", their content has been 'given' to RS Wiki subject to a CC-BY-SA license. However, one of the conditions of said license is that although third parties are free to use whatever the license is for, the original author(s) must be accredited in any subsequent versions. Another condition (the Share-Alike part) means that if the content is used elsewhere, it must be released under the same CC-BY-SA license as the original work.
Well firstly, Jagex's Wiki does not allow authors and contributors to be named, therefore there is no means to credit someone else's work. Secondly, everything submitted to Jagex is protected under commercial copyright, therefore they're not publishing the information under SA terms.
Simply put, unless Jagex change the copyright status of information on their website, and until they provide a way of naming a work's original creators, they cannot either themselves copy information from RS Wiki, or allow others to copy information to their website on their behalf, and if RS Wiki found a case of plagiarism, Jagex are legally obliged to remove it immediately.
Isn't the vast majority of stuff on RS Wiki covered by Jagex's copyright anyways (pictures of ingame items/etc)?
Materials (including without limit all information, software, data, text, photographs, graphics, sound and video) placed on any Jagex Product by us or on our behalf are protected by copyright and other intellectual property rights of ourselves or our business partners / suppliers / advertisers. You may not use these materials or any Jagex Product except in accordance with these terms and conditions and for personal (i.e. non-commercial) use only.
You agree that all intellectual property or other rights in any game character, account and items are and will remain our property. Jagex owns all rights in the Jagex Products, and you are only granted permission to use such products, subject to and in accordance with these Terms and Conditions.
By posting chat or other materials on any Jagex Product, you grant us a non-exclusive, perpetual, royalty free, worldwide licence to use and/or modify such materials on any Jagex Product as we see fit. You waive any moral rights to the extent allowed by law.
You agree that by submitting any material of any kind to us for any purpose connected with any Jagex Product (non-exhaustive examples are suggestions and ideas for any game or contributions to any Gallery page), you are giving us a non-exclusive, perpetual, worldwide, royalty-free licence to use and/or modify the submitted materials as we see fit. You agree to waive any moral rights to the extent permitted by law and that you will not withdraw the submission or attempt to make a charge for its use. Furthermore you guarantee that you are the exclusive copyright holder in relation to the submission and that the submission in no way breaches the rights of any other person or entity.
Can I make a fansite?
Yes, of course. We encourage the creation of fan sites and many of our players use them to gain information about our game.
There are a few pointers that you need to follow:
You must visibly acknowledge that the images are the property of Jagex Ltd, and that Jagex and RuneScape are registered trademarks of Jagex Limited, and you must provide a link to the official http://www.RuneScape.com website.
The images or our trademarks must NOT under any circumstances be used on or in conjunction with any website which encourages or helps users infringe our Terms and Conditions or breach the Rules of RuneScape. Using them on a scamming, hacking, password stealing, or cheating website is NOT allowed.
You must not use these images or our trademarks in a deliberately deceptive way. Your website must not portray itself as an official RuneScape website. Allowing you to use these images does not mean we endorse your website.
We may withdraw your permission to use these images at any time if we feel you are misusing them.
Can I use articles from the RuneScape or Jagex websites?
In all cases we retain copyright ownership and the right of approval in advance of you using any copyright material. We also retain the right to request anyone to remove the material.
All rights, including copyright and database right, in the RuneScape, FunOrb and Jagex websites and their contents, are owned by Jagex Ltd., or otherwise used by Jagex as permitted by applicable law.