Date: November 12, 2025
AI makes it easy to ship faster — but that’s exactly how product judgment erodes.
This gist gives you the opening section of the post so you can rethink how you build, especially if you’re vibecoding your way through features.
GitHub friends: this is a fast, practical cut of my Substack guide on vibecoding securely—trimmed for builders who ship at 2 a.m. and prefer checklists to lectures.
Originally published: Nov 03, 2025 · Author: Karo (Product with Attitude) with Farida Khalaf + skelly Source: https://karozieminski.substack.com/p/vibecoding-cybersecurity-fix-the-7-code-mistakes-leaving-your-startup-wide-open-and-vulnerable-playbook
The transformation is unmistakable: Substack has evolved from a simple newsletter platform into a thriving ecosystem where indie builders are creating products, launching businesses, and earning substantial revenue. This shift represents one of the most significant developments in the creator economy of 2025, fundamentally changing how independent entrepreneurs build and monetize their work.
Substack surpassed 4 million paid subscriptions in 2024, with over 50,000 publishers generating income on the platform. But the real story isn't about subscription revenue—it's about the indie builder economy that's emerged around it. Creators are no longer just writing newsletters; they're shipping tools, templates, courses, and digital products that generate significant revenue streams beyond traditional subscription models.[1][2][3]
The platform's growth trajectory shows why builders are flocking here: it added 1 million paying sub
Originally published on (https://karozieminski.substack.com/p/how-to-implement-hyper-personalization)
We say we hate it when apps track us.
But we also get annoyed when Netflix forgets we don’t enjoy documentaries about feet, Spotify forgets we’re in a sad autumn phase, or ChatGPT forgets that we do, in fact, like our photos in Ghibli style.
This contradiction is quietly reshaping product strategies in 2025.
Published: 2025-10-18
Author: Karo Zieminski
A growing library of repos, videos and skills for Claude Skills (100+)
Published on: https://karozieminski.substack.com/p/vibecoding-clis-claudecode-codex-iflow
Author: Karo Zieminski
Date: October 20, 2025
iFlow CLI is a terminal-based AI assistant designed for code analysis, automation, and productivity.
Published: 2025-10-18
Author: Karo Zieminski
Claude Skills radically simplify agent-building: no code, just Markdown and plain instructions.
Published on: https://karozieminski.substack.com/p/llm-optimization-experiment
Author: Karo Zieminski
Date: October 18, 2025
My publishing strategies needed a rethink. This experiment unpacks what actually gets picked up by large language models, drawing from hands-on tests across GitHub, Substack, and web platforms.
Published on: https://karozieminski.substack.com/p/prompt-pack-100-most-common-ui-elements-for-vibecoding
Author: Karo Zieminski
Date: October 17, 2025
A Notion database cataloging 100+ common UI elements with ready-to-use vibecoding prompts for each one. It’s essentially a prompt library specifically designed for building interfaces with AI.