A popular search engine with many features. It uses the Open Directory Project (DMOZ) RDF dumps in the directory section.
  http://www.google.com  [Site Details]

On-Line dictionary, Internet encyclopedia, and almanac reference.
  http://www.infoplease.com  [Site Details]

Reference collection including dictionaries, encyclopedias, newspapers, maps, reading lists, and quotations.
  http://www.libraryspot.com  [Site Details]

StatNova.com is a site where you can ask and answer questions about all aspects of life. Questions are in multiple choice format. Users can either pick from one of the existing choices or add their own. Users can also upload images.
  http://www.statnova.com/  [Site Details]