Humiliated, harassed, expected to do 12-hour days, often for nothing – an intern's lot is seldom a happy one. We find out what it's like to have no status at work. First, Tanya de Grunwald reveals why companies may soon have to stop exploiting interns
Steven Poole: When is an ad not an ad? Social media can use 'special offer', 'sponsor' and 'promoted tweet' all they like, but we all know they're trying to make money