1. A method comprising: receiving, at a server computer, a subscription request from a user via a first rendering device, the subscription request being a request to receive notifications of episodes added to the feed in the future, the feed accessible at a remote computing device; storing, in a subscription data store accessible to the server computer, subscription data associated with the user, the subscription data identifying the feed accessible at the remote computing device as a feed subscribed to by the user; and transmitting, to the first rendering device, at least some subscription data for display to the user identifying the feed and indicating that the user is subscribed to the feed.