Social media has changed the way people communicate. People have become so used to posting information about their lives that they don't give a second thought to posting information on someone else, even harmful information or pictures they don't have rights to.
An easement allows you access through a neighbor's property. Easements are common when there are things such as shared driveways or shared roads. If you need to cut through a neighbor's property, an easement is what you need to make the arrangement formal and legal.