Quite often it's difficult to determine what constitutes a case because many real events come under scrutiny. Since you have a say, and since you're objective, please fix our mistakes.
Very often it's useful in a discussion to use a concrete example of the subject matter to demonstrate the nuances and the mechanics of an argument. Typically this is done informally, probably as an anecdote, but it can be done more seriously. When taken formally, a detailed, well-edited example is known as a case.
Collectively, cases enter what's known as the case history and form the paradigm (~~representatives) of a field of study. Based on this body of work, freshly encountered experiences can often be structured into the existing framework by analogizing them to the already acquired cases. After formalizing these new experiences in relation to the others, often they may enter the case history themselves.
PatternLanguages are a particularly interesting and yet even more formal style of case history.
I'm not personally satisfied with my description of what is a case. Can someone do better? -- SunirShah
Maybe something about the benefit of extracting patterns from empirical evidence, and that anecdotal case studies and metaphors (storytelling) are time-honored ways to pass these insights down? -- ChristianCrumlish
I would be greatly encouraged to see more concrete cases from the RealWorld written for the dozens of patterns and ideas we have on the site. Take OpenProcess as a Case of Cases; it already has four cases describing how we could look at the principle. I think that without those cases, the basic description of the OpenProcess pattern would be difficult to understand. -- SunirShah
What is the point of this category? I mean, how useful is it to find "real-life examples", knowing nothing more about them? -- ChrisPurcell
Categories should be created for subject matter, not form, and "this is a real-world example" is form. Further, even if you use a page for the simple facts of the study, and multiple pages for analysis, it still makes sense to file the facts under the same category (or categories, if the data is useful in several) as the analysis, not under some catch-all "Case" category. -- ChrisPurcell