Though a few shopping APIs are some of the earliest examples we have, their popularity has continued to grow for a simple reason: there’s an obvious revenue model tied to them. When developers use one of the 82 Shopping APIs in our directory, that can mean money in the pocket of the API provider. And, by virtue of various affiliate and revenue-sharing programs tied to many of these APIs, it can also mean money in the pocket of the developer.
For the second week in a row, over 30 different APIs were used to build new apps in our mashup directory. Those 20 mashups used 31 different APIs. And once again not all of those APIs are the usual suspects. Less common ones used include Formula 1 Racing data API Ergast, the new Etsy API and Twilio API, the ecommerce pay-per-action LinkShare API, the Sunlight Labs API, and short URL expander LongURL. And in what’s clearly the new number one, the Twitter API was used in 4 of this week’s mashups. The list below shows which APIs were used by which mashups: