Who will fact check for you before and after referenda and elections? Who will tell you that 6,000 people need repeat smear tests? Mark Zuckerberg?, writes Joyce Fegan.

Bono, Bruce Springsteen and Beyonce Knowles were among a list of performers paying heartfelt tributes to US President-elect Barack Obama at a star-studded musical extravaganza just two days before he is inaugurated into office.