Really nicely done! I like how entities, concepts, etc. are color hilited in the original input text, and the Wikipedia links with thumb nail images shown in the results.<p>I have something similar that I have been working on for years as a side project: <a href="http:&#x2F;&#x2F;kbsportal.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;kbsportal.com&#x2F;</a>  I also resolve entities to DBPedia URIs.