define Tier II Search Engines

Definition:

Smaller, vertical and specialized engines, including general engines, such as Ask.com and AOL; meta-engines that search and display results from other search engines, such as Dogpile; local engines, shopping and comparison engines, and business vertical engines. Tier II Search Engines don’t offer the search query market share or features of the Tier I engines; however, Tier II engines can target specific, niche markets and are usually lower cost.