I think the lesson here is that you can't rely on the appstore to do your marketing for you. The iFart story is tragic for what it says about the audience; the only things it really tells a developer is that the general audience has low tastes, and that it's possible to get lucky.

At this point the chances of hitting the jackpot as an iphone dev are low and getting lower. But it should be possible to build solid sustainable businesses that have a mobile app as part of their overall strategy.

If you're looking for a get-rich-quick scheme this week, look twitterward :P