Catch the bug… Jonah Berger, whiz kid marketing prof at Wharton School, details 6 criteria for why things go viral. It makes for an entertaining read, but does not necessarily tread new waters in the world of marketing and advertising. Pretty obvious that exclusivity makes an object desirable and that attaching emotions to a concept can make it more appealing. We do like the bright orange cover and simple design, but for a more nuanced take on social epidemics, may be better off reading Malcolm Gladwell’s The Tipping Point. Not sure that Contagious will go viral…