Here is a break down of the different results categories on major Search engines. These categories play an important roles in getting you the best search results.
Google has the most search results categories when you make a search query. They have All, Images, Videos, News, Maps, Shopping, Books, Flight, Finance and the Personal category when you make a search query. Web App Store Google Play
Ask.com has both Answers and Videos.Web
Tagrax has Recent, Popular, Web, News, Social, Shop, Media, and Apps. App Store
Yippy: Yippy just has the Web.Web
Infospace has Web, images, Videos and News.Web
Dogpile has Web, Images, Videos, News, and Shopping. Web
WebCrawler has Web, Images, Videos and News. Web