An invention for dissemination or retrieval of digital resources or online information via context layer or context-level protocols and interfaces is described. According to one embodiment, an interface or protocol that a computer uses to communicate with other computers is associated with a subject matter context. User-level contents or digital resources received across that interface or protocol are then associated with that subject matter context, and the computer may respond accordingly. For instance, a computer may associate a given network port with a subject matter context of shopping, and treat all digital resource requests received on that port as applying to only a shopping subject matter context. A web server may also listen on a network port associated with a subject matter context, thereby contextualizing the overall nature of the website that the web server hosts.