Jack Johnson, the half of Jack & Jack, has spent the last month soliciting social media passwords. The 20-year-old Hawaiian singer-songwriter has tweeted at his fans to send him their passwords. Legal experts say he may be opening himself up to criminal liability under the Computer Fraud and Abuse Act. Johnson’s efforts have prompted no reports of misuse of the social networking site’s terms of service. There’s no evidence that Twitter has punished Johnson or his fans for sending him passwords.”]