Semantic Search Engine now available

The Delaware Library Catalog E-library page now features an integrated web-search option through Hakia.com. The search box is located on the lower left of the page, and allows patrons to search for information on the web using Hakia.com's innovative 'Semantic Search' technology. While most popular web search engines use popularity-based ranking to answer user queries, Semantic Seach categorizes results based on quality and relevancy, based in part on contributions and recommendations from library and information professionals. Hakia.com is currently concentrating particularly hard on creating a niche market of quality search for medical and health topics, and I would be interested to hear feedback about the strength of their results in this area.
UPDATE: best tried in Firefox or Chrome right now- not consistently working in Internet Explorer although if you do a search in IE and then refresh the browser, the results will show.