Podcasting involves creating audio or video files and distributing them through RSS feeds so that they can be accessed and played on various devices. It requires compelling and authentic content published on a regular basis, as well as recording equipment, audio editing software, and hosting to publish the podcast. An example podcast called 123Hints provides short how-to segments twice a week that are casually narrated using a lapel mic, mixer, and GarageBand for recording and editing before publishing on iTunes, Libsyn and Blip.tv. Podcasting audiences are growing significantly, estimated to reach 65 million listeners by 2012 according to a report.