About

Start from a complaint someone already wrote down.

This catalog is free. Every business idea has the public thread it came from, a Hotness score, a business-plan prompt, and a growth prompt. You can copy both prompts. Nothing on this site asks you to log in or buy a credit.

Where the ideas come from

1. We read high-engagement discussions in public communities, starting with Reddit.
2. Report 01 kept threads above an engagement floor inside Sep 14 to Oct 14, 2026.
3. We keep the recurring problem, not the loudest single comment.
4. Editors rewrite it as a business someone could open: who pays, what they use today, and what a first offer looks like.
5. The original thread stays linked. We show a short title excerpt. We do not republish the post.

How Hotness is calculated

Hotness runs from 1 to 5. Pain is 25%, willingness to pay 20%, demand 20%, the gap left by current options 15%, how operable the offer is 10%, and recency 10%. Cool is under 2.5. Scorching is 4.0 and above. Recency is recomputed whenever the catalog is rebuilt, so an idea cools unless newer evidence is added. Each idea page shows the six numbers. A source report’s own 1–10 figure stays in the data file and is not presented as ours.

How the shelves work

Niches, industries, markets, models, and topics. A niche page is indexed once it holds at least five ideas. A facet page needs five. A topic page needs three ideas and an introduction long enough to stand alone. Thinner pages remain reachable and are marked noindex. Free-form tags never get a URL.

What you can take

• The idea page, the evidence, and the questions are free.
• The business-plan prompt and the growth prompt are free to copy and download.
• This site does not sell software credits and does not take a build deposit.

Standards

No invented quotes. Demand claims link to a source. Last-verified dates are on the page. Corrections and removal requests go to sponsors@businessideastobuild.com. These are suggestions for a business, not medical, legal, or financial advice.

Sponsors

The catalog is funded by sponsorships, not by locking the prompts. The same table is a CSV. The ten charts are on analytics. Methodology v1.0, October 2026.

Questions