With one snippet of code added to your website, all iTunes, App Store, iBookstore and Mac App Store links will be converted to affiliate links.
http://autolinkmaker.itunes.apple.com/
Advertising · Affiliate Programs
Get access to data on 57,796 websites that are Apple Auto Link Maker Customers. We know of 16,202 live websites using Apple Auto Link Maker and an additional 41,594 sites that used Apple Auto Link Maker historically and 10,973 websites in the United States.
Get a list of 57,796 websites using Apple Auto Link Maker which includes location information, hosting data, contact details, 16,202 currently live websites and an additional 88,117 domains that redirect to sites in this list. 41,594 sites that used this technology previously and 10,973 websites in the United States currently using Apple Auto Link Maker.