Pandora thinks it has a way to thrust its not-so-dominant Premium music service into the public consciousness: hooking into a social network that's also fighting for relevance. Premium subscribers can now share songs, stations and whole playlists as Snapchat cards, whether they're headed to Stories or directly to friends. You were previously limited to using a free or Plus membership, and in a much less sophisticated fashion to boot. And yes, Pandora is fully aware that your friends probably don't use the service. If they aren't Premium members (but live in the US), they can listen to half an hour of uninterrupted tunes so long as they're willing to watch a 30-second ad.