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.
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.
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.
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.
