This is an interesting point that has been brought up several times. Often times I hear from developers that they think their app is good but there are just too few people that know about it. By paying for install you are essentially trying to capture that "word of mouth" marketing and hopefully send your app on an upward spin of sales.

That being said I can see the concern. My question for other app developers is whether they make money on current mobile advertising platforms such as adMob, Quattro, Google etc? It seems to me that if you get 5 downloads for a $50 dollar campaign that it would be more worth your while to spend that $50 dollars on a campaign that guarantees downloads and puts your app into users hands. One of my original motivations behind the idea for adsReloaded was all the stories behind the terrible conversion rate for iPhone advertising so I am very interested in developer feedback on this particular point.