Fixing the WSOD (White Screen of Death) in Drupal

When you're messing with Drupal and get a blank screen, times are tough. But, to get at least a clue or two as to what might be going on, just throw these few lines of code in your index.php file (as per this nice drupal.org article):

error_reporting(E_ALL);
ini_set('display_errors', TRUE);
ini_set('display_startup_errors', TRUE);