Forum:Category naming preferences - singular or plural?

When creating new categories, do you think it's better to name them with plural or singular nouns? For instance, if you had a wiki about interior design and planning to have a bunch of articles on different kinds of chairs, should the categories be "chair" or "chairs"? In this hypothetical scenario, each article will be about only one kind of chair except for maybe one or two articles that summarize or compare features for the different types of chairs.

This Central Wikia uses both. Examples:
 * Category:Computer Games (Games categories are rather consistently plural.)
 * Category:Community
 * Category:Culture
 * Category:Language and Category:Languages
 * Category:Logo and Category:Logos
 * Category:Religion

Plurals seem to be a bit more common. Opinions? -- CocoaZen 23:57, 22 July 2007 (UTC)
 * I prefer plural nouns.--Imaginationac (Talk | Edits | [mailto:imaginationac@gmail.com Email]) 02:39, 23 July 2007 (UTC)
 * Category language is for Wikia about language, languages is for a category with all Wikia languages. I recommend plural, unless the word is uncountable. – Smiddle / talk 11:12, 23 July 2007 (UTC)