User engagement with podcasts has been steadily increasing, and many listeners actually prefer longer-format content, based on results of Apple's Podcast Analytics. The service, which Apple launched late last year, gives podcasters a way to track performance metrics including number of listeners, total time listened and time per device. The audience for podcasts has increased as content has become more specialized in nature, the analytics show. Listeners engage with podcasts for much longer periods than with other types of online content.