WP:NOHARM/WP:NOGOOD; "the potential readership or subjective usefulness of each item does not have to be justified if the material is notable"
WP:ITSFUNNY; "Articles cannot be kept for their humor value alone, nor can they be kept because they are on a topic an editor finds humorous"
WP:NOTCLEANUP; "an article which may currently be poorly written[...] can be improved and rewritten to fix its current flaws"
WP:GHITS; "the quality of the search engine results matters more than the raw number" (see WP:SET)
WP:THISNUMBERISHUGE; "Notability isn't determined by something's quantity of members, but rather by the quality of the subject's verifiable, reliable sources"
WP:IKNOWIT/WP:IDONTKNOWIT; "Everything in Wikipedia needs to be verifiable information published in reliable sources", "This argument is not sufficient on its own to be persuasive in deletion discussions"
WP:NOTINHERITED; "notability of a parent entity or topic does not always imply the notability of the subordinate entities"