I like the gamification aspect and I know at least one big music/podcast app which has really great click rates on their pop-up banners. Having said that, this

I like the gamification aspect and I know at least one big music/podcast app which has really great click rates on their pop-up banners. Having said that, this doesn't seem to fit well with what I'm trying to build, which is a no-nonsense open source podcast app. Some might like the pop-ups you're talking about but I'm sure that more than enough people will complain about it.