Have you ever seen Drupal.org's built-in search functionality return better results than Google's site:drupal.org mechanism? Right, me neither. Are the visitors to your websites experiencing the same disappointing results? Don't assume that they aren't. For sites with a significant number of pieces of content, popular search contrib modules may not be delivering a good experience, and the core Drupal search module may be performing even worse. The findability of content is a critical part of an effective online strategy, and may require further effort to be optimized.