Lead gen

Find your first buyers in competitors' one-star reviews

Read your competitors' one-star reviews on G2 or Google Maps to find people who already pay for this kind of product and have said exactly what is wrong with it. Then send each of them a short personal message about that one complaint instead of a mass email.

The hard part: writing each message by hand around one real complaint, which takes more time than a mass email.

Setup 4 hoursRuns $10/moYour time Most daysReadiness Readiness 73 out of 100Light on detailHow we score thisNeeds ClaudeDecision modelAirtable

Who pays

This is a way to find your first paying customers, not a business on its own. Someone who left a one-star review was paying for the product and has named the problem you can fix. No source reports sales from this method, so treat it as a tested idea for outreach, not a proven result.

How to build it

  1. List your closest competitors

    Write down the 3 to 5 products or local businesses your customers would otherwise use. Find their review pages on G2, Capterra or Google Maps.

  2. Collect the one-star reviews

    Copy each one-star review into an Airtable base with the reviewer's name, job title or company if shown, the date and the full text. Recent reviews matter most.

  3. Keep complaints you can fix

    Run each review through a decision model (a fast AI that only makes yes/no or sorting calls) with a question like 'Is this complaint about something my product fixes?' Keep only the yes rows.

  4. Find the reviewer's contact details

    For each kept review, look up the person or business on LinkedIn or their website. Skip anyone you cannot clearly identify.

  5. Write about their one complaint

    Ask Claude to draft a short note that mentions only the complaint that person raised and how you handle it, then rewrite it in your own words. Do not send the same message to the whole list.

  6. Send a few and track replies

    Send a handful of messages each day and log replies in Airtable. Change your wording based on which complaints get people to reply.

Sources on X

  • kai_cabero · Jul 1, 2026

    kai_cabero says a competitor's 1-star reviews on G2 are the most valuable lead list there is. The poster argues that each 1-star reviewer has confirmed they have budget, because they were paying, and has confirmed they need this kind of product.

  • eng_khairallah1 · Jun 25, 2026

    eng_khairallah1 describes a tool someone built with AI coding help. You type in a business type and city, and it collects every matching business from Google Maps with 30+ data fields. It then reads their reviews and writes cold emails based on complaints from each business's own customers.

Ideas are curated from public posts and untested by us. Read the full note.