Bug Jam is a new feature that allows users to easily provide feedback to developers by leaving comments on their site, which are then compiled into a launch checklist with screenshots and debug logs. This feature aims to make it quick and easy for users to comment, while providing clear and concise information for developers to action. With Bug Jam, developers can zip through final fixes, making the product more awesome for users without back-and-forths. The feature is invite-only but will be available to everyone after a limited time.