Earlier today we quietly rolled out a new version of the Zemanta engine and API!
The Zemanta engine is responsible for analyzing whatever you write and producing suggestions that are delivered to your blogging dashboard. As with every new release, we have improved accuracy (especially of in-text links) and slightly improved speed.
More importantly we have added some functionality that third party developers have been requesting for some time now. New web API parameters allow you to get more entities and concepts for your text, more related articles, and more images. You can now also limit the age of the related articles (probably the single most requested feature).
Information about the new parameters is available on our developer portal. No matter if you use the API for term extraction, as a keywording engine, named entity extraction, or related news API, the results should be improved as of today!