In order to improve the quality of articles which are short or lacking in detail, WoWWiki's community take part in collaborations to expand articles.
This collaboration will be focused on item creation and improvement. While Thottbot and Allakhazam have excellent databases of items (and will prove useful in creating articles). Internal links are always preferred over external links. Since many articles link to items having internal links will keep a user from having to go off-site to get to additional information. A lot of people have a preference for one site or the other, rather than forcing the reader to go to the site of the author's choice they can go to an internal page where they should be able to get the information they need. Most items pages (should) have links to external pages, which allow the reader to go to the site of their choice if they want more information...more information