Let's first install Drupal for Facebook module as it's stated in readme file.

1.First download and install FB PHP-SDK, download from http://github.com/facebook/php-sdk. Extract the files, and place them in sites/all/libraries/facebook-php-sdk on your site

We just changed what is published to Facebook in last post, lets do the same for twitter.

There is one and only one module you should use when using facebook integration with drupal its Drupal for Facebook(DFF). It has many features but its also a bit harder to setup and use.