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Products, marketing, tools: I test a lot, sum up what works, you avoid my mistakes.
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A pivot is often just the polite word we use with investors when the first company is dead and we have decided to build another one. And that is fine. Not because failure is noble, but because luck needs exposure: every market you enter, every product you ship and every channel you test is one more surface where something unexpected can land.
Build articles
On Reddit, Claude Code lives in three subreddits: r/ClaudeCode, r/ClaudeAI and r/claude. The five threads Google ranks for this query, posted between June 2025 and March 2026, disagree on the verdict and agree on the cause: the output tracks what the person handed the tool. The failed reports share seven mistakes, and the people it works for describe a fix for each.
Dashboarding tools turn a database into charts that other people can read without writing SQL. On September 12, 2026, I built the same three charts from one Postgres database in Grafana 13.2, Metabase 0.63 and Evidence 0.9, all open source. All three drew the same numbers. What separates them is what you edit afterwards, JSON files, a click interface or a markdown page, and how much memory the server takes.
A self-hosted AI agent is an agent whose runtime you install on hardware you control. In most setups that covers only one of three layers: the runtime is yours, the model is still a cloud API, and the tools reach wherever you point them. Keeping the model local is a separate decision, and it costs memory, roughly 16 GB for the smallest capable models, plus some tool-calling reliability.
Marketing articles
An AI marketing cloud is a vendor suite that stores customer data, runs campaigns across channels and reports on them, with AI attached to five tasks: writing content, choosing who receives it, deciding when and where, explaining results, and answering replies. Salesforce sells its version from $1,500 per org per month; HubSpot from $7 per seat. The data underneath is priced separately.
A cold email is a first message sent to one specific person who has never heard from you, for a reason tied to that person, with a request they can refuse. It is not spam, which sends one text to a list, and not a newsletter, which goes to people who signed up. In the US it is legal without prior permission if you identify yourself and honor opt-outs; in the UK, Canada and the EU it depends on who owns the address.
LinkedIn offers nine post formats: text, image (one or up to 20), video (one per post, up to 15 minutes), document (a PDF or slide file, up to 300 pages), poll (two to four options), celebration, event, article (125,000 characters) and newsletter. Pick one by the single action you want a reader to take in the feed: read, swipe, watch, vote or save. A reach ranking is the wrong reason.
Brands I back
AgentMail
Email infrastructure for AI agents: create an inbox by API, send and receive, and let an agent act on structured messages.
Mailivery
Email warm up as a service: automated real conversations that build a sending domain's reputation before campaigns need it.
PostHog
Open source product analytics: events, session replay, feature flags, A/B tests and surveys in one platform, with a real free tier.
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What I test and keep, sent when it is worth your time. Nothing else.


