Google’s shows you a broken robot. Twitter has a team of its mascot birds trying to lift an elephant. Error pages -- that online limbo you go to when you click a broken link or there’s a problem with a website -- have become very creative, even cutesy. But now an initiative in Europe wants to make them more useful. Missing Children Europe has partnered with Belgian NGO Child Focus to ask companies to donate their websites’ error pages to help spread the word about missing children.