requires/publisher.js
function(user, overwrite){
            var uid = user.identifier, ow = overwrite || false;
            if(!!uid){
                if(!this.users[uid] || !!ow){
                    this.users[uid] = user;
                }
            }
        }
function(user, overwrite){
            var uid = user.identifier, ow = overwrite || false;
            if(!!uid){
                if(!this.users[uid] || !!ow){
                    this.users[uid] = user;
                }
            }
        }
other helpers