I se the term GIS being used for professional applications, while there is a growing interest on applications (online or desktop) that use Web Maps and User-Generated GPS Data so that individuals can plan, navigate and analyze their activities, which include sports activities such as cycling, where each trackpoint has one or more measurements (heart rate, power, etc.)
There are already some file-format standards for that (GPX, KML with gx:Tracks) and lots of sites about it too.
What seems to be lacking is an explicit conceptual unity among these overlapping applications and their respective application schemas, and that is something I am very inspired to research and study (mostly as a hobby).
But what should I look for, that is, which terms or words should I google, if I want to find discussions about these types of applications? How are they named or cathegorized?
(Edit: I couldn't even find proper, more specific tags for this question... :o) )
Yet another edit: This excerpt from OGC Abstract Specification, Topic 5 - Features translates my thoughts about what I said formerly in the question:
The use requirements of geospatial content for an information community always reflect the specific discipline or disciplines of their owners. Examples of geospatial disciplines in which geospatial abstractions are frequently found include forest management, soil mapping, cadastre management, base cartography, surface hydrology, wetlands, transportation modeling, and so forth. Each of these disciplines has many sub-disciplines, and an information community can involve any combination of these.
It is exactly the multiplicity of languages at the Project World level that leads to the most difficult problems in interoperability between geospatial information stores. This is the source of much of the splintering that artificially divides the Geospatial World. The situation is manageable, however, if sufficient care is taken in the formalization of the language constructs. We will see that each Geospatial Information Community is intimately related to an equivalence class in the set of all possible Project Worlds under a special relation.
The Information Community are any sort of enthusiasts GPS users who want to plan and analyze their activities using a computer, and Project World would be the sort of features (DEMs, Roads, POIs, Tracks).