migrate_d2d provides a framework based on the Migrate API for migrating content from Drupal 5, Drupal 6, or Drupal 7 sites into the Drupal 7 site where it is installed. As of the 2.1 release, It requires Migrate 2.6 or later. Besides addressing contemporary needs to migrate to Drupal 7, it has helped serve as a proof-of-concept for incorporating the migration approach into core as an upgrade path (https://groups.drupal.org/imp).
Uses both the honeypot and timestamp strategies to deter spam bots from completing forms on your site. These methods are effective and not as intrusive as CAPTCHAs or other schemes that punish the user.