To be honest, I don't think giving away information about your strategic edge matters that much. What does matter is the culture of a company. If you're hustling, you'll create extra new edges big and small all the time. If it's a big edge, the general outline will be good enough to tip off your competitor without you talking about it. As the saying goes, execution matters a lot more than ideas.
You can share your knowledge, which quickly turns you in a gathering point for interesting knowledge. This makes interesting stuff, good employees and new customers come to you begging for attention, which is a much bigger strategic edge.
On the other hand, imagine Dan Luu's example company that takes a year to approve a blog post. If your culture is that bad, even discussing if accepting a mountain of money laying on the street no strings attached is acceptable will take a few months. Show them your edge, and assuming they see it as actually valuable instead of extra work, it will still take a year of bureacratics before they start implementing it.
See also Rudyard Kipling:
They copied all they could follow but they couldn't copy my mind
so I left them sweating and stealing a year and a half behind.
You can share your knowledge, which quickly turns you in a gathering point for interesting knowledge. This makes interesting stuff, good employees and new customers come to you begging for attention, which is a much bigger strategic edge.
See for example the story of Tom Wilson's videocard at Mike Abrash's https://www.phatcode.net/res/224/files/html/ch64/64-01.html - a minimal hint which turned out to be wrong was enough inspiration for a better product.
On the other hand, imagine Dan Luu's example company that takes a year to approve a blog post. If your culture is that bad, even discussing if accepting a mountain of money laying on the street no strings attached is acceptable will take a few months. Show them your edge, and assuming they see it as actually valuable instead of extra work, it will still take a year of bureacratics before they start implementing it.
See also Rudyard Kipling:
They copied all they could follow but they couldn't copy my mind so I left them sweating and stealing a year and a half behind.