By now, most web developers have heard of Drupal and its success stories (e.g. the White House's website adopted Drupal for content management). The question is… should you bother to learn it? Learning new skills is always helpful to your career prospects and Drupal is gaining more recognition, but an experienced developer with expertise in a specific area like Java or .NET probably doesn't need Drupal skills to get a job. Large website developers and less experienced developers however, would see a lot more benefits from learning Drupal.