I've never stopped using RSS, since it is so useful for many use cases. I've even recently built a tool, as an experiment, using it (https://github.com/dethos/w

I've never stopped using RSS, since it is so useful for many use cases. I've even recently built a tool, as an experiment, using it (https://github.com/dethos/worker-planet https://github.com/dethos/worker-planet). Who remembers what a "planet" software is? Fortunately we can still find many websites and services that provide RSS feeds (probably because the tool/framework they are built with, automatically provides that feature). Implementing it is not hard, but in the end I think the most important aspect of that list is `5.`, not a website in particular but creating awareness that this tech/tool exists and in what cases it can be useful.