Project ideas from Hacker News discussions.

My experience has nuance, yours is a data point

šŸ“ Discussion Summary (Click to expand)

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šŸš€ Project Ideas

RegretSignal

Summary

  • Browser extension that adds a nuanced "I regret watching this" button (with optional sentiment tags) to capture negative feedback that current like/dislike buttons miss.
  • Core value: gives users agency to tell recommendation algorithms they engaged reluctantly, reducing unwanted content spirals.

Details

Key Value
Target Audience Power users of YouTube, Netflix, Spotify who feel trapped by recommendation loops
Core Feature One‑click regret button + sentiment tagging that feeds a local ML model to down‑rank similar content
Tech Stack TypeScript, React, WebExtensions API, TensorFlow.js for on‑device inference
Difficulty Medium
Monetization Hobby

Notes

  • HN users complained ā€œI’m engaging with this, but I hate myself for doing itā€ (bryanrasmussen) and wanted a way to signal regret (graemep). This directly addresses that.
  • Could evolve into a cross‑platform feedback standard, sparking discussion about algorithmic accountability.

FeedGuard

Summary

  • A personal proxy/intermediary that rewrites recommendation feeds from platforms according to user‑defined rules (topic caps, blocklists, interest decay).
  • Core value: lets users enforce diversity limits (ā€œno more than 5% about bad economyā€) and break echo chambers without leaving the platform.

Details

Key Value
Target Audience Users who want control over their algorithmic diet (e.g., news, video, music consumers)
Core Feature Rules engine that intercepts API responses or scraped feeds, applies topic classification and enforces caps/filters
Tech Stack Go (backend), Python (topic classification with spaCy/HuggingFace), Docker, optional browser extension for UI
Difficulty High
Monetization Revenue-ready: subscription $4/mo

Notes

  • HN commenters asked for ā€œintermediary feeds … that lets us customize how much we get of each type of contentā€ (zug_zug). This idea implements that.
  • Provides concrete utility for discussion on algorithmic transparency and user agency.

OpenRec

Summary

  • An open‑source, local‑first recommendation engine that learns from explicit user signals (likes, dislikes, regret, watch time) and runs entirely on the user’s device.
  • Core value: privacy‑preserving personalization that never sends raw behavior data to servers, while still delivering tailored suggestions.

Details

Key Value
Target Audience Privacy‑conscious users and developers who want to self‑host recommendation logic
Core Feature On‑device model (e.g., lightweight neural collaborative filtering) updated via user feedback; exportable to platform APIs via user‑controlled tokens
Tech Stack Rust (core), PyTorch Mobile or ONNX Runtime for inference, SQLite for local storage, optional WebAssembly wrapper for browser use
Difficulty High
Monetization Hobby

Notes

  • Users expressed distrust that feedback is used primarily to keep them on the platform (jjulius) and wanted alternatives that don’t rely on opaque servers (BuyMyBitcoins). OpenRec gives them full control.
  • Could become a building block for many apps, fostering discussion about decentralized recommendation ecosystems.

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