A digital footprint is all of the information online about a person either posted by that person or others, intentionally or unintentionally. Filling out a form, leaving a blog comment, updating your status, checking into a location, emailing or IMing a friend, posting a photo, visiting a website, using a search engine... everything you do online leaves a trail. This trail is your digital footprint. Understanding how to manage your online reputation or "digital footprint" is a challenging process. Includes a Common Sense video. [1:57]