There's no doubt that Wikipedia is a giant store of information. And yes, they have an API, but the data isn't exactly structured. But that didn't stop Jim Blackler, who created Quizipedia, a fun game based off of Wikipedia entries.
It's time to start shopping around for another API to search for deals, prices and reviews. That it, if you use the Yahoo Shopping API (our Yahoo Shopping API profile). On March 11 Yahoo's service will be discontinued, replaced by a "strategic partnership" that will leave developers sniffing for deals elsewhere.