text: Meteor.publish('usernameAutocompleteSubscription', function(selector, options, collName) {
      options.limit = Math.min(50, Math.abs(options.limit || 0));
      _.extend(options, {fields: {'_id':1,'username':1,'profile.gravatarUrl':1}, reactive: true});
      var users = Meteor.users.find(selector, options);
      Autocomplete.publishCursor(users, this);
      this.ready();
  });
  