Facebook, Twitter, TikTok are all ad-supported and that is viable because they have huge userbases.
How viable is it for small/medium websites to be supported by ads? I'm interested in any examples people have and even more interested by any HN'ers doing this.
Hacker News is famously run on 2 boxes. And that is without Cloudflare + CDNs to cache static requests: static websites are practically free. Domains are cheap as well, even a .com domain costs $20/yr and domains like .xyz cost <$5/yr. The cheapest linode cloud server costs $5/month. Idk how much ad revenue pays out but I imagine it can recover those costs.
However, you probably won't profit from ad revenue, and it definitely won't sustain a full income.