OK, you can take this with as many grains of salt as you wish, but one iPhone developer is claiming to have hit the jackpot with Apple's new iAd format. Posting his earnings to Hacker News, the app developer claims to have earned almost $150 in eCPM on the first day! The question is, will iAd be able to sustain this kind of engagement or is there a novelty value at play here. The developer himself seems to think the latter: This is from a utility app that was released today.