# Sudoku website with text-link advertising

Built a Sudoku website that now earns from advertising, mostly sponsored text links, with free signups seeing no ads.

| Tag | Value | Confidence |
|---|---|---|
| Category | Content and media | 77% |
| Earns from | Ads | 90% |
| Startup cost (estimate) | $100 to $1k | 48% (low) |
| Time (estimate) | Hands-off | 92% |
| Where | Online | 99% |
| Coding | Needs coding | 95% |

Source: [Ask HN: Are you working on any side projects that make "small/passive" income?](https://news.ycombinator.com/item?id=2358789), Hacker News, perlgeek, 2011-03-23
Page: https://allsidehustleideas.com/ideas/sudoku-website-with-text-link-advertising-c31568

## About this data

- Sources are public, first-person accounts: interviews, podcasts and community threads.
- Cost, time and the other tags are machine estimates, each with a confidence score.
- Income figures are the owner's own claim. We don't verify them.
- Link the idea page and its source. Call income figures the owner's unverified claim, and cost and time estimates.