Los Angeles - A Florida man accused of hacking into the email accounts of more than 50 celebrities, including Scarlett Johansson, Christina Aguilera and Mila Kunis, has pleaded guilty.Christopher Chaney, 35, now faces up to 60 years in jail and ??1.5million in fines and restitution after entering guilty pleas to unauthorised computer access, wiretapping and other felony charges.He explained how he