Cameron here, designer for The Informant. We've just launched as a Heroku addon and are looking for feedback, insights & whatever you can throw at us.<p>What it is: The Informant is usability testing in the form of error tracking. It simply watches ActiveRecord validations and tracks when errors are triggered. It's a great way to learn where users are making mistakes, so you can improve the usability of those areas.<p>For example, maybe you're getting abandonment rates on account creation or checkout. The Informant will tell you if users are simply mistyping their phone number a lot, and the fix might be as simple as a copy edit or more forgiving backend logic.<p>tl;dr your users make mistakes all the time. Now you can learn where and why, and fix it. :)