Dogpile is a metasearch engine that combines results from Google, Yahoo!, Ask, Bing, and several other popular search engines, including those from audio and video content providers. Dogpile began operation in November 1996. The site was created and developed by Aaron Flin.
The characteristcs of Dogpile are: it cointains sponsored links, where the information was found, the possibility to have an advance search and to see images, news, videos and search in the white and yellow pages of the United States. There exists filters for underage; none, moderate and heavy. Finally it can bold the terms searched, show the last fifteen searches and share your searches in Twitter, Identi.ca, Facebook, Wordpress or Blogger.
One of the things that I like the most of Dogpile is the diary changes in its main page, like this: