Being constantly logged in to and active on our e-mail account is true for most people. What might be equally true is the temptation to use the e-mail as a provisional to-do-list. We tend to think of this as a temporary solution to a problem which we actually create by commiting this structure-sin... Today's Done! is about the golden rule of keeping things in one and only one place, and what the repercussions are of breaking this rule.