Wikipedia:Redirect/Deletion reasons

1. The redirect page makes it unreasonably difficult for users to locate similarly named articles via the search engine.
2. The redirect might cause confusion. For example, if "Adam B. Smith" was redirected to "Andrew B. Smith", because Andrew was accidentally called Adam in one source, this could cause confusion with the article on Adam Smith, so it should be deleted.
3. The redirect is offensive or abusive, such as redirecting "Joe Bloggs is a Loser" to "Joe Bloggs" (unless "Joe Bloggs is a Loser" is discussed in the article), or "Joe Bloggs" to "Loser". (Speedy deletion criterion G10 may apply.)
4. The redirect constitutes self-promotion or spam. (Speedy deletion criterion G11 may apply.)
5. The redirect makes no sense, such as redirecting Apple to Orange. (Speedy deletion criterion G1 may apply.)
6. It is a cross-namespace redirect out of article space, such as one pointing into the User or Wikipedia namespace. The major exception to this rule is the "CAT:" shortcut redirects, which technically are in the main article space but in practice form their own "pseudo-namespaces". "MOS:" redirects are also an exception to this rule. (Note "WP:" redirects are in the Wikipedia namespace, WP: being an alias for Wikipedia.)
7. If the redirect is broken, meaning it redirects to itself or to an article that does not exist, it can be deleted immediately, though you should check that there is not an alternative place it could be appropriately redirected to first.
8. If the redirect is a novel or very obscure synonym for an article name, it is unlikely to be useful. Implausible typos or misnomers are potential candidates for speedy deletion, if recently created.
9. If the target article needs to be moved to the redirect title, but the redirect has been edited before and has a history of its own, then it needs to be deleted to make way for move.
10. If the redirect could plausibly be expanded into an article, and the target article contains virtually no information on the subject. In such a case, it is better that the target article contain a redlink than a redirect back to itself.

1. They have a potentially useful page history. If the redirect was created by renaming a page with that name, and the page history just mentions the renaming, and for one of the reasons above you want to delete the page, copy the page history to the Talk page of the article it redirects to. The act of renaming is useful page history, and even more so if there has been discussion on the page name.
2. They would aid accidental linking and make the creation of duplicate articles less likely, whether by redirecting a plural to a singular, by redirecting a frequent misspelling to a correct spelling, by redirecting a misnomer to a correct term, by redirecting to a synonym, etc. In other words, redirects with no incoming links are not candidates for deletion on those grounds because they are of benefit to the browsing user. Some extra vigilance by editors will be required to minimize the occurrence of those frequent misspellings in the article texts because the linkified misspellings will not appear as broken links.
3. They aid searches on certain terms.
4. You risk breaking incoming or internal links by deleting the redirect. Old CamelCase links and old subpage links should be left alone in case there are any existing links on external pages pointing to them.
5. Someone finds them useful. Hint: If someone says they find a redirect useful, they probably do. You might not find it useful—this is not because the other person is a liar, but because you browse Wikipedia in different ways.
6. The redirect is to a plural form or to a singular form, or to some other grammatical form.

Just like article titles using non-neutral language are permitted in some circumstances, so are redirects. Because redirects are less visible to readers, more latitude is allowed in their names. Perceived lack of neutrality in redirect names is therefore not a sufficient reason for their deletion. In most cases, non-neutral but verifiable redirects should point to neutrally titled articles about the subject of the term.

Non-neutral redirects are commonly created for three reasons:

1. Articles that are created using non-neutral titles are routinely moved to a new neutral title, which leaves behind the old non-neutral title as a working redirect (e.g. Dalmatian Kristallnacht → Dalmatian anti-Serb riots of May 1991; Climategate → Climatic Research Unit email controversy).
2. Articles created as POV forks may be deleted and replaced by a redirect pointing towards the article from which the fork originated (e.g. Barack Obama Muslim rumor → deleted and redirected to Barack Obama presidential primary campaign, 2008).
3. The subject matter of articles may be represented by some sources outside Wikipedia in non-neutral terms. Such terms are generally avoided in Wikipedia article titles, per the words to avoid guidelines and the general neutral point of view policy. For instance the non-neutral expression "Attorneygate" is used to redirect to the neutrally titled Dismissal of U.S. attorneys controversy. The article in question has never used that title, but the redirect was created to provide an alternative means of reaching it because a number of press reports use the term.

If a redirect is not an established term and is unlikely to be used by searchers, it is unlikely to be useful and may be nominated for deletion. However, if a redirect represents an established term that is used in multiple mainstream reliable sources, it should be kept even if non-neutral, as it will facilitate searches on such terms. Please keep in mind that RfD is not the place to resolve most editorial disputes.