JSTOR, which has been criticized by open-access advocates for keeping its content behind a paywall, is opening some of its early content up for free perusal by the public, reports Brian Bergstein at the Technology Review Editors blog. JSTOR maintains a database of academic journal articles — about 6 percent of its content will now be free, though that only includes articles that were published before 1923 in the US or before 1870 elsewhere in the world.