someone shipped my exact feature 19 days after i posted the schema and the screenshots

Posted openly for two years. My rule now is that I post the problem, the decision and the mistake, and I don't post the mechanism. 'Spent four days figuring out how to group config changes so people stop skimming past them' is a great post. The screenshot of the actual grouping is a spec.

Nobody follows you for the spec. They follow you because you keep showing up and because your reasoning is interesting. You lose almost nothing by cropping.

Going to push back on the premise. Nineteen days is not enough time to design, build, review and ship a feature inside a product that already has customers, unless it was already in flight. It is far more likely they were building it anyway and your post is the reason you noticed.

That's not nothing - it means you picked the same obvious next step as a team with more information than you have - but 'they copied me' and 'we both read the same complaints' look identical from the outside.

The part worth being annoyed about isn't the feature, it's that they have distribution and you don't. A feature takes a competent team a week. An audience takes two years. If a nineteen-day copy can take your business, the feature was never the business.

I'd spend the next month on what they structurally can't copy: a specific integration, the vocabulary of one niche, support that answers in an hour.

Keep posting. Change what you post. Ship the next thing before you write about the last one.

New to posting publicly and this thread scared me, so I landed on a compromise that seems to be working: I post on a two week delay. Whatever I shipped a fortnight ago is what I write about this week. It's still honest, the screenshots are real, and by the time anyone reads it the feature is already live for my users.

The only cost is that the updates feel less exciting to write, which honestly made them better, because I'd stopped being high on the change.

One boring protection: put a date on everything and leave the posts up. If you ever need to show you were first, a public timestamped post is the cheapest evidence there is. It won't win you anything but it ends the argument in a group chat.