Nice. May want to rule out images that are too common (the search magnifier) or routine/small (nationality flags, though I got most of those right).

Also, especially after answering, I'd like to click through to the real article to see the image in context -- so it's be nice to provide that link.

It might be interesting to use the same corpus in a different challenge -- for example, five articles and five pictures, match each to the right article.