`Radiopaper`: public threads that publish only after the other side accepts

Tries to fix public-thread abuse by withholding replies until the counterparty accepts. The stronger signal is the stack: email-first UX and a $40/month burn make this pattern cheap to test.

[ KEY POINTS ]

Core mechanic: a reply stays private until the other party replies or accepts it, filtering drive-by trolling before it becomes public.
Users can participate entirely through email; replying to a notification publishes back to the site, which lowers login friction for discussion products.
Infra is deliberately lean: Vue + TypeScript, Go, Cloud Run, Firestore, Firebase Auth, plus Gmail API and SendGrid.
The team says a few hundred active users still fit under free-tier limits, with overall burn around $40/month from tools like Sentry, Mixpanel, GitHub, and SendGrid.

Originalradiopaper.com/exploreRead original →

// related

#0001
#0001Idea signals GeekNews6 hours ago
`AI Overviews` Can Be Skewed by a Single Page
40radar
A lone webpage changed answers from ChatGPT and Google in a BBC test. Brand and reputation monitoring now needs answer-engine checks, not just classic SEO.
- BBC’s test made ChatGPT and Google identify one person as a world champion hot dog eater. One page was enough to distort the answer.
- Sensitive verticals like health and finance are exposed first. Thin but authoritative-looking pages can shift AI summaries.
- This creates a service angle: monitor AI Overviews and chatbot answers for brand, founder, product, and competitor queries.
Source: news.hada.io/topic?id=29717Read original →
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#0002
#0002Idea signals Hacker News · MRR7 hours ago
`Phosphene` open-sources custom macOS video wallpapers
50radar
PhosphenemacOS wallpaper utility — adds custom videos to Settings
Custom macOS video wallpapers now have an open implementation. Polished incumbents make this better as reusable reverse-engineering than a standalone business.
- WallpaperExtensionKit.framework controls how wallpapers appear in macOS Settings; Phosphene replicates enough behavior to list custom entries.
- The app keeps video running on the desktop, unlike Apple Aerials, using AVSampleBufferDisplayLayer with PTS-offset gapless looping.
- Thermal state, battery, brightness, and window occlusion drive pause or downshift logic. That is the practical part to copy.
- The commercial read is blunt: even a working niche utility loses appeal when existing competitors are already polished.
Source: github.com/kageroumado/phospheneRead original →
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#0003
#0003Idea signals Simon Willison13 hours ago
`TokenSpeed` makes LLM output speed visible
40radar
TokenSpeedHTML demo app — visualizes LLM token output speed
Speed claims become easier to judge when they animate like real model output. Useful for product demos and latency expectations, not model ranking.
- Simulates 5 to 800 tokens/second, enough to compare slow local runs, normal API streams, and fast batch-like output.
- A quoted 30 tokens/second number is hard to feel in specs; visual playback makes perceived wait time obvious.
- The app is plain HTML with source available, so the idea is easy to embed in docs, sales pages, or model-picker tools.
Source: simonwillison.net/2026/May/20/tokens-per-second/#atom-evRead original →
40radar
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`Radiopaper`: public threads that publish only after the other side accepts

// related

`AI Overviews` Can Be Skewed by a Single Page

`Phosphene` open-sources custom macOS video wallpapers

`TokenSpeed` makes LLM output speed visible