This is why metrics and analytics have become superstars lately. Why hope for your users to tell you, when the software can do it by itself?

Following the article's use case, the software could transmit the last dozen or so commands or actions performed by the user. In a simplistic scenario, how would you interpret it if 40% of your user's last commands are "Save"? Success, surely! How about "Undo"?

The art and magic, of course, are in figuring out valuable yet inexpensive metrics for your app, capturing that data when you have thousands or millions of users, and interpreting the meaning.