The "talk to customers" advice is incomplete — here's the signal most founders miss

Everyone on IH says the same thing: "Talk to customers before you build."

It's not wrong. But it's missing something.

When you cold-email strangers or run a survey, people tell you what they think they want. The real signal lives
somewhere else — in the places where people complain when nobody's selling them anything.

Reddit. Hacker News. Niche forums.

I've spent the last year indexing thousands of startup opportunities from these communities. The pattern is
consistent: the ideas that get traction already have organic language around them. The ones that don't, no amount of
pivoting fixes.

Here are the 3 signals I look for now, before anything else:

"I'd pay for this" said unprompted

Not in response to your cold DM. In a thread about a completely different topic. Someone mentions a tool they wish
existed and says "honestly I'd throw $20/month at this."

That's not just demand. That's demand with a price anchor, from someone with no incentive to tell you what you want to
hear.

The same frustration across multiple communities

One Reddit thread complaining about X could be a bad week. The same complaint in r/entrepreneur, r/smallbusiness, and
r/freelance over 18 months? That's a chronic pain point, not a temporary one.

Chronic pain = people will switch tools, pay more, and tell others. One-time frustration = feature request, not a
business.

Existing workarounds

When people describe elaborate hacks they've built to solve a problem — spreadsheets with 12 tabs, Zapier chains with
8 steps, copy-pasting between 3 tools — that's the clearest signal of all.

They've already voted with their time. They just haven't found something worth voting with their money yet.

You can do this manually. Pick your target problem, search Reddit and HN for it, read 50 threads. Takes a few hours
but it's worth it.

I built MonetScope (https://monetscope.com) to automate this — it continuously indexes opportunities from Reddit and
HN and scores them on pain level, demand signal, and validation confidence. If you want to run your current idea
through it, reply here and I'll pull the closest matches from the database for you. Free, no signup required.

But honestly, even without the tool — start with the communities before you start with the interviews.