Online encyclopedia major Wikipedia has launched a new Wiki search engine called Wikiseek. You can better search Wikipedia with this search engine. There are AdSense ads on it too.
The contents of Wikiseek are restricted to Wikipedia pages and only those sites which are referenced within Wikipedia, making it an authoritative source of information less subject to spam and SEO schemes. Wikiseek utilizes Searchme's category refinement technology, providing suggested search refinements based on user tagging and categorization within Wikipedia, making results more relevant than conventional search engines.