Academic journals generally get their articles for nothing and may pay little to editors and peer reviewers. They sell to the very universities that provide that cheap labour. As other media falter, academic publishers have soared. Elsevier, the biggest publisher of journals with almost 2,000 titles, cruised through the recession. Last year it made £724m ($1.1 billion) on revenues of £2 billion—an operating-profit margin of 36%. –Academic publishing: Of goats and headaches | The Economist.