It's time for a new post in the series about "secret" elmah.io features. This is the series where I highlight features that some of you may already know while others don't. For today's post, I want to highlight a feature that turns 3 years old this week: Breadcrumbs. Breadcrumbs is a built-in feature in all of our client integrations and the UI. Debugging what went wrong is often a lot easier by providing a logged error with a list of breadcrumbs leading up to an error.