Founder, here.
It is an imperfect analogy, but let me try to elucidate what our model actually is.
We currently power over 250 companies, from some of the most popular applications like Instapaper and Shopspring, to search engines like Bing, DuckDuckGo, Yandex, and eBay to business intelligence tools like Crunchbase.
Our thesis is that access to large volumes of structured data will be just as critical a resource as the learning algorithms or the computational hardware for developers building the next generation of smarter application, and we offer our knowledge-as-a-service as a platform/component to build end-user applications around.
Part of the new funding is going to our effort to build a comprehensive database of knowledge synthesized and fact-checked from the sum total of all of the information on the web. There is some parallel to Google's knowledge graph project, except that our method is fully autonomous (no human curation) and we are building a self-sustaining business around it with a fully-featured API that everyone (outside of Google) can use.