Who actually uses these products,
and what made them stay.

The Readwise Highlight Librarian

A voracious reader — typically a knowledge worker, researcher, writer, or lifelong learner — who realized that reading without retention is expensive entertainment. They started using Readwise because they kept forgetting what they'd read. They now have 8,000–30,000 highlights across Kindle books, web articles, PDFs, and podcasts. They do the daily review. Not every day — most days. The review takes 5 minutes and resurfaces things they've completely forgotten. Occasionally a highlight resurfaces at exactly the right moment for what they're working on. This is not magic. This is why they pay for Readwise.

“It happened mid-workflow — tuesday morning.”

The Roam Research Networked Thinker

A writer, researcher, or knowledge worker who uses Roam Research as an extension of their thinking. They don't organize notes into folders — they write, link, and let the graph reveal connections. They use daily notes as their entry point, double-bracket references to build a web of ideas, and block references to connect thoughts across pages. They've read about Zettelkasten, spaced repetition, and evergreen notes. They've adopted some of these ideas and adapted others. They are building a thinking system, not a filing system.

“Not a single dramatic moment — more like a Tuesday at 3pm when they realized they hadn't thought about performance degrades with large graphs — search and page loads slow down over time in two weeks.”