lib/websockets.js
function (users, args) {
    for (var id in this.sockets) {
      if (users.indexOf(id) !== -1) continue;
      this.sockets[id].emit(args);
    }
  }
function (users, args) {
    for (var id in this.sockets) {
      if (users.indexOf(id) !== -1) continue;
      this.sockets[id].emit(args);
    }
  }
send a public message - to all /but/ the specified users