I didn't downvote you, but your post seemed narrow-sighted, focused on a single goldmine as if it's the only one that will ever exist. If obscurity is your only defence, it isn't a strong competitive moat. Better to have a technique for finding lots of goldmines.

> If you had ever found a goldmine in the past you might understand. And if yes, please share this goldmine.

I did this once on HN, over a year ago. I shared an exact technique that made me a 50%+ return during the year after I posted it. (Okay, maybe that's more like a tiny mini treasure chest, but it was still a money maker.) I'm not sure anyone even read it. Even if you give people a goldmine the majority won't be in a position to take advantage of it. Or perhaps they have better opportunities.

Sharing tactics can help you make contact with other interesting people, who are open to collaboration or cross-promotion and who provide you with opportunities in return. It's basically the Patio11 / Patrick McKenzie strategy.

I think I can see your perspective now, though I don't agree.

> If you find the map straight to a goldmine, why should you share it?

It's not that you should share it. It's that the risk of people flooding to your strategy and ruining ROI is low, so if you want to share it for some reason (e.g., contributing to the community, being nice), I don't think you should worry.

Your example is artificial. In attempting to justify a fear that I find overly common, you've provided an imaginary scenario where that fear might be justified. I don't think it addresses the argument well. Plus, even in your example, I think the risks are low. Lots of people have to read your comment, believe you're telling the truth, and most importantly, be set up to quickly use the information to drive traffic to their own site. Chances are their products aren't exactly the same as yours, and the conversion rates might not be so high for them. Many will anticipate this and not even try. Everyone else will just extract the higher level "insight" from the keywords and move on.

I'll share a story. There is a very successful company called Ravean, they sell coats and sleeping bags with heated linings. They've done several million on Kickstarter over the past few years. The founder of Ravean did some interviews and explained his ad strategy. He said initially he tried advertising with keywords targeting camping and outdoor consumers. Eventually, after burning up 7 or 8 grand, he erased all his keywords and targeted crowdfunding enthusiasts with keywords like "Kickstarter", "Indiegogo" and "crowdfunding." He claims his conversion rates jumped way, way up. In the interviews, he says "I should charge for this advice." Now he does charge for it:

https://ravean.com/crowdfunding/

So, even though there is a freely accessible interview, online, where this guy gives away his knowledge, he still makes money selling the same advice to other people. There is such a sea of information out on the web that any one thing is very likely to get lost.

The Ravean advertising trick is as close to the scenario you mentioned, and here I am, sharing it with HN. But how many people will really read this comment? How many will be doing crowdfunding campaigns in the near future? How many will immediately jump on the advice? Will it move the CPC needle? I doubt it.

Every gold rush in history has ended up that the most money is made selling picks and shovels, not working a claim.

This is why there are so many firms selling marketing tools rather than selling marketing directly.