Well I have been using wikiasearch as well as just seeing how it will play out in the search engine wars. Sense wikipedia is so huge, wikisearch might just become just as big if promoted correct. Here is some news I found on a cool blog I read often.
http://www.techcrunch.com/2008/06/03/jimmy-wales-wikia-search-finally-doesnt-suck/
http://www.techcrunch.com/2008/06/03/jimmy-wales-wikia-search-finally-doesnt-suck/
