Edit in JSFiddle

/*
 * simulate an ajax operation to fetch a customer profile
 */
function getUser (id) {
  return Q.delay(1000)
  .thenResolve({
      id: id, 
      name: 'user ' + id, 
      twiterHandler: 'jfroma'
  });
}

/*
 * simulate an asynchronous fetch from twitter.com
 */
function getTweets (customer) { 
  return Q.delay(1000)
  .thenResolve([{
    message: 'I love Q and Promises/A+'
  }]);
}

getUser(123)
  .then(getTweets)
  .then(function (tweets) {
    tweets.forEach(function(t){
      alert(t.message);
    });
  });