The grand jury investigation into WikiLeaks has widened. A subpoena has been issued to David House, co-founder of the Bradley Manning Support Network. Manning s ex-boyfriend, Tyler Watkins, who recently appeared in PBS Frontline s 'WikiSecrets' documentary, and Nadia Heninger, who has done work with WikiLeaks volunteer Jacob Appelbaum (someone whose Twitter user data has been subpoenaed by the government), have each been served with a subpoena