I am considering creating an app for the first time. Since it will represent a significant time investment, I am wondering if it will get a decent return ($) on my investment. I am thinking of making the app free and running it with iAd. Therefore, I've been trying to find statistics about how much money developers typically get, but I've had no luck. COULD SOMEONE RUNNING iAd POST THEIR TYPICAL REVENUE? Thanks. I now that depends on various factors but i'm really want an average.