Solo founder in Hanoi launches four spin-off sites alongside his AI training career platform

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A solo developer based in Hanoi runs aitrainer.work, a career platform for people who rate and write answers for AI models, which has earned $26,435 since its January launch, mostly through referrals. In October he launched four spin-off projects, including AI Training Board, which uses a Clippy-style mascot to differentiate itself, and Dataconto, which helps companies license their data to AI labs. He also released githubworth.com to estimate codebase value and DomDom Jobs, a family of niche job boards now numbering six. The main site's traffic doubled in October to 26,354 visits, though revenue dipped to $8,397 from $9,620 in September, and GitHub briefly flagged his account, halting deployments for a week.

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