Think the internet is a revolution of sharing ideas? Nope. “The coffee-houses that sprang up across Europe, starting around 1650, functioned as information exchanges for writers, politicians, businessmen and scientists. Like today’s websites, weblogs and discussion boards, coffee-houses were lively and often unreliable sources of information that typically specialised in a particular topic or political viewpoint. They were outlets for a stream of newsletters, pamphlets, advertising free-sheets and broadsides. Depending on the interests of their customers, some coffee-houses displayed commodity prices, share prices and shipping lists, whereas others provided foreign newsletters filled with coffee-house gossip from abroad.”