Hacker News Reader

Amen! The Android Developers blog (https://android-developers.googleblog.com, available as RSS at https://android-developers.googleblog.com/atom.xml) comes to mind - It includes updates on new compliance requirements to keep an app listed on Google Play, which I care about, mixed with a whole lot of crap I don't care about, like Google's latest shiny thing like Jetpack Compose, fluff pieces and marketing speak.

How did you solve this problem?

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For my personal site I create RSS feeds for all the main posts, but also an RSS feed for each tag. If someone only wants to read my posts about TypeScript they can just follow the TypeScript tag instead of the main feed.

Hand-written code :)

I don't split an existing RSS feed, but I scrape a website, and store the posts in a database, with a column for the user who posted it.

Then I generate an OPML file with URLs like http://localhost:1234?user=... per user, and spin up a web server that fetches only that user's feed given the query parameter. Import the OPML into the news reader, and bingo bango.

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