How to track marketing efforts for iPhone apps on the App Store?

Is there a way to track marketing campaigns in the app store to find out what works and what doesn't, so you can determine which marketing tech开发者_如何学Pythonniques are actually working?

You can sign yourself up as a referrer (or seven), so that you can see which links result in the most sales

http://losingfight.com/blog/2010/04/09/tracking-iphone-ads-to-app-sales/