Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A safe list is an agreement between people involved in an open relationship or a polyamorous (often called poly) relationship outlining not only who the individual partners are able to be intimate with without seeking prior permission, but also what activities are acceptable. The decision to have an open or poly relationship requires a lot of communication between spouses or partners to prevent any misunderstandings. A safe list is an excellent tool for specifying rules and boundaries while at the same time allowing the partners freedom to act upon spontaneous situations.