https://www.vox.com/the-goods/2019/1/11/18178701/spotify-discover-weekly-brand-playlists-personalization > Discover Weekly was a triumph of algorithm and curation, and now it’s an ad product. > Spotify is now offering brands the option to sponsor Discover Weekly, its signature customized playlist that updates every Monday for each user. It is supposedly one of the most popular features among both the platform’s 87 million paid subscribers and 109 million ad-supported free users.