Nothing endures but change, and the latest newspaper and magazine stats from Nielsen and the Audit Bureau of Circulation are no exception, as the ABC changes both its methodology, and its frequency of audits. The ABC will now be sending out quarterly rolling averages, instead of the six months end-on-end averages it has been doing. The key benefits for marketers and agencies will be receiving more regular data, and the methodology of releasing rolling annual totals is aligned with readership.