Apple is still the best-known source of podcasts, but Spotify has offered podcasts for a few years now and has really upped its game in the past 18 months – including a controversial $100M exclusive. Other ways to listen to podcasts include TuneIn, iHeart Radio, Pandora, and Radio.com.

There shouldn’t be a need to invite selected shows to participate. If you claim to offer access to podcasts, listeners ought to be able to access all available ones. But there’s more.

There’s of course no way to unilaterally demand confidentiality – if you choose to write to someone without first asking them to agree to keep things private, they are under no obligation to do so.

Update: We’ve heard from a tiny podcast show that they have been invited, so at least it’s not just the big shows.