Links to external sites should be used in moderation. To be candidate for linking, an external site should contain information that serves as a reference for the article, is the subject of the article itself, is official in some capacity (for example, run by id Software), or contains additional reading that is not appropriate in the encyclopedic setting of this wiki. We are not a search engine. Extensive lists of links create clutter and are exceedingly difficult to maintain. They may also degrade the search engine ranking of this site.
Elinks should be constrained to one section titled “External links” at the end of a page. Elinks within the main content of a page are discouraged, and should be avoided where possible.
If you want to link to a site outside of Wookieepedia, it should almost always go under an “External links” heading at the end of an article. Avoid using an external link when it’s possible to accomplish the same thing with an internal link to a Wookieepedia article.
Avoid using external links in the body of a page. Pages can include an external links section at the end, pointing to further information outside IMSMA Wiki.
Here are some examples I found of non-Wikipedia-related wikis discouraging the use of external links:
Doom Wiki:
Sasukepedia:
Wookieepedia:
IMSMA wiki:
Feed The Beast Wiki:
Fair enough—thanks for the examples!