The Guardian, Saturday January 24 2009 Ben Goldacre Blue Monday started life as a corporate puff for Sky Travel (end of January, perfect time to book a holiday). Their PR company, incidentally, offered a suspiciously similar ready-made “equation” to another academic, just months before it first appeared as important research by Cardiff academic Cliff Arnall. … Continue reading “Blue Monday” is churnalism, beware any journalist who puffs it