– Casey Anthony's not guilty verdict sparked Facebook outrage, a couple of Nancy Grace rants, and now a fast-growing petition for a new law. "Caylee's Law," thought up by Oklahoma mom of two Michelle Crowder, would require parents and guardians to report a child's disappearance to police immediately. Caylee Anthony was last seen June 16, but was not reported missing for a full month. Crowder, who started a Change.org petition as well as a Facebook page asking Congress to create the law, says she was "sickened" when Casey Anthony was convicted only of lying to the police, and was not "charged with child neglect or endangerment, or even obstruction of justice.” Her Change.org petition is the fastest-growing campaign in the site's history, with nearly 2,000 people signing it each hour, the Washington Post reports. Click for more on the Anthony trial aftermath.