The Dogpile Spy Search feature of Dogpile.com is no longer available, and no documentation regarding its legality is available online. However, the Dogpile search engine continues to operate and is as legally sound as any other search engine available.
Metasearch search engines combine the best results from several search engines, including the popular Google and Yahoo! search engines, reports Dogpile. To use the site, visitors enter keywords and click the Go Fetch! button. Search results then appear. Users can also search the Yellow Pages or White Pages online through the site. Tools that include a search filter to block explicit content and a statistics bar that shows the number of results for a particular search query are also available through the site.