I sent PostAll to 11 beta users three weeks ago.

I expected feedback about the UI. Maybe some complaints about output quality. A few "would be nice if..." suggestions I could politely defer.

What I got instead: three separate users hitting the same architectural assumption I'd never tested, a feature I was proud of that nobody used, and one piece of feedback that made me rewrite the job queue from scratch.

Here's what actually happened.

The Feedback I Expected vs. What I Got