Well, keep in mind that those are the figures for free applications. The barrier for paid applications is a lot less - about a tenth. I've seen application de

Well, keep in mind that those are the figures for free applications. The barrier for paid applications is a lot less - about a tenth. I've seen application developers experiment with this approach, generally using in-application advertising, but the conversion rates aren't compelling - and if you fail to get ranked, then you've blown a lot of money. I'd only try it in conjunction with a lot of simultaneous free press, working whatever opt-in e-mail list you've built up for your app business, etc. And I'd stop for a bit when you get onto the top 100 and let the natural benefits of just being on that list carry your application higher. Greg Yardley Co-Founder, Pinch Media