This guideline is a part of the English Wikipedia's Manual of Style.
|This page in a nutshell: Sections with lists of miscellaneous information (such as "trivia" sections) should be avoided as an article develops. Such information is better presented in an organized way.
|Manual of Style (MoS)
Avoid creating lists of miscellaneous information. It was once common practice on Wikipedia for articles to include lists of isolated information, which were often grouped into their own section. These sections were typically given names such as "Trivia", "Facts", "Miscellanea", "Other information" and "Notes" (not to be confused with "Notes" sections that store reference citation footnotes). For an example of this practice, see the John Lennon trivia section from December 10, 2005. This style guideline deals with the way in which these facts are represented in an article, not with whether the information contained within them is actually trivia, or whether trivia belongs in Wikipedia.
Trivia sections should be avoided. If they must exist, they should in most cases be considered temporary, until a better method of presentation can be determined. Lists of miscellaneous information can be useful for developing a new article, as they represent an easy way for novice contributors to add information without having to keep in mind article organization or presentation: they can just add a new fact to the list. As articles grow, however, editors encountering such lists may feel encouraged to add to them indiscriminately, and these lists may then end up becoming trivia magnets which are increasingly disorganized, unwieldy, and difficult to read. A better way to organize an article is to provide a logical grouping and ordering of facts that gives an integrated presentation, providing context and smooth transitions, whether in text, a list, or a table.