> Meh, I firmly believe mobile apps are the best passive income generators available today, and it's only going to get better.

This seems harder — making apps is more time-consuming and a less common skill than copy-pasting pictures of cupcakes.

It also seems less straightforward — the concept of "figure out what lots of people are talking about, make blog on topic, stick ads on it and let Google bring in visitors" is pretty simple, whereas I have no idea what the equivalent is for apps.