users.js

exports.routes = function() {
  this.get('/', function() {
    var users = db.collection('users');

    this.res.setHeader("Content-Type", 'text/html');
    this.res.writeHead(200, {});

    var that = this;
    var stream = users.find().forEach(function(err, userDoc) {
      if(userDoc) {
        that.res.write('<h1>' + userDoc._id + '</h1>');
        that.res.write(JSON.stringify(userDoc));

        if(userDoc.subscriptions) {
          that.res.write('<ul>');
          userDoc.subscriptions.forEach(function(err, userSubscription) {
            if(userSubscription) {
              that.res.write('<li>' + userSubscription + '</h1>');
            } else {
              that.res.write('<ul>');
            }
          });
        }
      } else {
        that.res.end();
        return;
      }
    });

  });
}

We're good down to line 12, but the if on line 14 is never true.
The goal is that if a user has subscriptions, their keys (e.g. facebook) should be printed in a ul.