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.
Facebook added a new feature to its Facebook Credits API that allows developers to download reports regarding payments in their Facebook applications. The payment reports are generated daily by Facebook. Up until now, developers had been receiving payment reports via email.