Hi HN! We're a bootstrapped team of 4 and have been building Radiopaper for around 16 months alongside other full-time, part-time, and consulting jobs.
I wanted to highlight a couple of the unique characteristics of Radiopaper that may not be immediately apparent when browsing https://radiopaper.com/explore
* It's possible to interact with Radiopaper entirely by email, and never log-in interactively. The notification emails contain context that explains that if you reply to the email, your message will be published on https://radiopaper.com
* The key mechanism that makes Radiopaper different from other social networks, and more resistant to trolling and abuse, is that messages are not published until the counterparty replies or accepts your comment. You can read more about this in our manifesto at https://radiopaper.com/about
The technical stack is a Vue/TypeScript app talking to an API backend written in Go, running on Cloud Run, and using Firestore for persistence, Firebase Auth for authentication.
Email processing is handled through the Gmail API hooked up to a Cloud Pubsub notification which triggers another Cloud Run service. Outbound emails go through SendGrid.
The whole stack "scales-to-zero", and on days that we have a few hundred active users, we're still under the free limits of Firebase Hosting, Cloud Run & Firestore, so this has allowed us to operate for a long time without funding or revenue. Our overall burn rate is around $40/month, mostly from the smattering of other SaaS offerings we use: Sentry, Mixpanel, Github & SendGrid.
Dave & I discuss our tech stack in a little more detail in this conversation:
https://radiopaper.com/conversation/4PsvfxLX2Q5NHLBs8nuN
The team (myself, daave, davidschaengold, youngnh) will be around to answer any questions!
It was a probabilistic method to filtering out the trolls, and it worked well. Trolls wanted to ban, but they themselves became the more-frequent targets of bans. Eventually, they would get frustrated with the bans and leave. The people that remained, stayed civil to not become a clear target of a ban. There would be brief chaotic behavior, but it never lasted. Cooler heads always prevailed.
Radiopaper mentions that there is a lot of room for exploration in this space, to try different models for creating emergent social behavior and productive conversations. I hope we see more of it!