The iOS app store was mired in fart apps in the early days. Many of them were very profitable. I think it's just a natural growing pain of any consumer-facing app store.
I remember those days vividly, what's different here is the Alexa Skills list is sorted alphabetically so this fart app is what every single person who enters the "store" sees first.
http://venturebeat.com/2008/12/23/iphone-fart-app-pulls-in-n...