I visited the creative booth today and talked to their lead developer for Zencast and the ZenCast Organizer, sadly it appears that Ceative did not reach out to the podcasting community, the development team for the zencast.com website is not even in the United States apparently the website development Singapore and it’s feature sets are being driven from that location.
Currenly the site does not support ping, you cannot claim your feed and visitors to external websites are going to be very confused if they click on the subscribe icon that is starting to show up on podcasters website because they have not tied the functionality of the ZenCast Organizer to the ZenCast website.
Also of note searching for a show on the website will only result in your site being found if you have your site name in the description. Additionally their directory like others are showing shows that are in excess of 24 hours old and are not staying current with the few shows that are in the current directory.
Based upon my initial investigation it appears that most of the listings in their directory came from the podcast.net directory, So they are missing thousands of entries and their is no direct way to subscribe. [ZenCast.com]