Yottalook.com is a semantic web search engine for radiology or an intelligent radiology search engine
www.yottalook.com
This website provides intelligent search capabilities to look for peer-reviewed radiology content including journals, teaching files, CME, etc. This search engine is optimized to be used as a decision support tool at the time if interpretation when you need the information quickly. It uses semantic ontology of medical terminologies that not only identifies synonyms of terms but also defines relationships between terms to expand the search results. Try searching for "kidney stones" and you will see what I mean.
Yottalook also has a book search where you can search and read >5000 radiology text books online as well as anatomy search for radiologic and non-radiologic anatomic references.
This site will be extremely useful for the practicing radiologist.