Our API directory now includes 71 eCommerce APIs. The newest is the PayAnywhere API. The most popular, in terms of mashups, is the Seatwave API. We list 8 Seatwave mashups. Below you'll find some more stats from the directory, including the entire list of eCommerce APIs.
ReferralCandy is an online marketing company that specializes in referral marketing. The company provides a plug-and-play platform that makes referral marketing easier. Techinasia.com notes that ReferralCandy modeled their structure after Dropbox’s two-sided incentive referral program. Dropbox’s program rewarded both the user that signed up through a referral link and the referrer with additional storage space. This tactic has proven successful for ReferralCandy who recently released their ReferralCandy API.