I'm assuming they are going to consider my use of outbound traffic restrictions on the Spotify app "ad blocking". Spotify makes all kind of ridiculous outbound requests for ad services, and many of those requests are over plain text http. Given that Spotify is a webkit app, that's a nice little attack vector Spotify is providing. Not to mention malicious ads often make their way into the ad networks. So i just block anything other than 443 to *.spotify.com domains.
Just deleted the app. I'll use Youtube instead.