Feedback is vital for the practice of Continuous Integration (CI) -- in fact, it's the life blood of a CI system. Rapid feedback enables speedy responses to build events that require attention. Without feedback mediums like e-mail or RSS, builds in a broken state have the tendency to stay broken, which defeats the purpose of CI in the first place! In this installment of Automation for the people, automation expert Paul Duvall examines various feedback mechanisms that you can incorporate into CI systems.