Service has been discontinued.
Unfortunately due to lack of resources and time, this service has been discontinued. This answer will remain for historical purposes.
##Ask Ubuntu Search
Ask Ubuntu Search is a fast search engine for the site that uses the information in the data dumps and the API to respond to your search queries. Because it uses the API to keep up to date, the server uses data no older than two minutes to process your search query.
http://askubuntu.quickmediasolutions.com
Screenshot:
