Now anyone can follow any podcast to see what activity is happening. i.e if there is a new episode published (announce), if a new comment has been made (boost) and by whom or someone becomes a new fan (subscribe) or even who just played the podcast. (listen).
Equally once you claim your podcast in TrueFans, all of this published activity is up to the podcast creator to choose what verbs they make public. /cc @dave @davejackson @theDanielJLewis @evan