How does RSS work?

A new class of social feed apps is reviving an older web technology: RSS. The interesting idea is not nostalgia, but control: can a feed feel modern without handing ranking, ads, and filler to a central platform?

Why this matters now

Most professionals experience information overload as a feed problem. The web has more useful writing, audio, documentation, and niche expertise than any person can follow manually. Platform feeds solve discovery and convenience, but often trade those benefits for opaque ranking, engagement incentives, and limited user control.

RSS matters because it separates publishing from distribution. A writer, company, podcast, or project can publish on its own site, expose updates in a standard feed, and let readers subscribe using the feed reader of their choice. That makes the relationship more portable: if you change readers, the sources can come with you. If a publisher changes its site design, the feed can still deliver structured updates.

For AI and technology learners, RSS is also a useful mental model. It shows how lightweight protocols can create ecosystems without requiring one platform to own the whole experience. That same idea appears in APIs, package registries, identity systems, and data pipelines.

How it works

RSS, short for Really Simple Syndication, is a web feed format. A publisher maintains a machine-readable file containing recent items, usually with titles, links, timestamps, summaries, and sometimes full content. A feed reader periodically checks that file, detects new items, parses the metadata, and presents updates in a personal feed.

Publisher feed ···················
     │
     ▼
Feed reader checks feed ···········
     │
     ▼
Parsed items ·····················
     │
     ▼
User feed ························

The key mechanism is subscription rather than recommendation. You choose sources explicitly. The reader does not need to infer what will keep you scrolling; it only needs to collect updates from the sources you selected. Some readers add folders, search, filters, read later queues, or discovery features, but the core contract remains simple: publishers announce updates, readers fetch them, users decide what to follow.

This is different from a platform-native feed. In a platform feed, publishing, identity, ranking, monetization, and interface often live in one controlled environment. In RSS, those functions can be separated. The publisher owns the site, the reader owns the interface, and the user owns the subscription list.