Hi, my name is Dan. I used to contribute to Wikipedia in a variety of ways, but I've given up because ignorant or malicious editors have resisted or undone so much of my work.

For newbies

• Wikipedia:Cheatsheet
• Tony1's writing tutorials
• Wikipedia:Manual of Style
• Style guidelines for film articles
• How to write a plot summary

Plot summaries

Wikipedia has a quality problem

Wikipedia is plagued with problems in grammar, writing style, and organization. Too many editors lack the skills, and in some cases the maturity, that should be required to contribute to an encyclopedia. This is especially a problem with anonymous editors, but it also applies to registered wikipedians, including administrators.

Bad English

See User:Coder Dan/Bad English.

Bad style

See User:Coder Dan/Bad style.

Categories

• no common parent category for combined "Anime and Manga" categories
• deletion of Love Me Tonight from 1930s musical films category with no subcategory to replace it
• Categories for countries and species are named as sets but treated as topics. Each of these should be divided into two categories, a set with a plural name and a topic with a singular name. For example, Category:Dog should be created as a parent of Category:Dogs, and all topical content should be moved from cat:Dogs into cat:Dog.
• There's a widespread confusion between categories (abstract sets) and category listings (Wikipedia web pages). Many editors seem to think that articles cease to be members of a parent category when they are "diffused" into child categories. This reflects a fundamental misunderstanding of what categories are.
• trying to implement software changes through editing processes (awkward and unreliable)

• Categories as associations

• Leprechaun films: Horror, science fiction, and comedy; serial killer films

• Redundant, multidimensional "by" categories

Multidimensional "by" categories defeat the purpose of the category system, which is to organize articles by content. They contain the same articles as ordinary single-issue "by" categories, but in a flatter, less organized structure.

• Category:History by country and topic
• Category:History by country and city

Extremes and inconsistency

Editors often work at cross purposes. Sometimes they prefer opposite extremes over reasonable compromises.

• Names of starring actors listed in the lede of film articles:
    One editor adds redundant first names in the plot summary
    while another removes the names altogether.

Churning

Sometimes editors replace high-quality text with text in their own personal writing style, which in many cases is worse than the original.

• complete rewrite of The Incredibles plot summary (rewritten by an administrator, much worse than the previous version)
• complete rewrite of Kim Possible: A Sitch in Time plot summary (anonymous editor, gratuitous changes, incoherent, too many details and quotations)

Excessive detail in plot summaries

• Wait Until Dark