A human search engine is a search engine

Search engine

A search engine is an information retrieval system designed to help find information stored on a computer system. The search results are usually presented in a list and are commonly called hits. Search engines help to minimize the time required to find information and the amount of information...

 that uses human

Human

Humans are the only living species in the Homo genus...

 participation to filter the search results and assist users in clarifying their search request. The goal is to provide users with a limited number of relevant results, as opposed to traditional search engines that often return a large number of results that may or may not be relevant.

Examples of human search engines include TellSome, Slangwho

Slangwho

Slangwho is a social search engine that is operated and privately owned by Slangwho, Inc.- History :Slangwho, Inc. was founded by John S. Shriber, Roman Zaks, and Sasha A. Tcherevkoff on September 1, 2009...

, Jumper 2.0

Jumper 2.0

Jumper 2.0, is an open source web application script for collaborative search and knowledge management powered by a shared enterprise bookmarking engine that is a fork of KnowledgebasePublisher[]. It was publicly announced on 29 September 2008,...

, Sproose

Sproose

Sproose is a consumer search engine launched in August 2007 by founder Bob Pack. Sproose provides web search results from partners including MSN, Yahoo! and Ask.com...

, NiteCo, ChaCha

ChaCha (search engine)

ChaCha is a search engine that specializes in answering questions through a technique known as the human search engine. ChaCha was created by Scott A. Jones and Brad Bostic...

, Mahalo.com

Mahalo.com

Mahalo.com is a web directory and Internet-based knowledge exchange launched in alpha test in May 2007 by Jason Calacanis...

, Isawiki and the now defunct NowNow from Amazon.com

Amazon.com

Amazon.com, Inc. is a multinational electronic commerce company headquartered in Seattle, Washington, United States. It is the world's largest online retailer. Amazon has separate websites for the following countries: United States, Canada, United Kingdom, Germany, France, Italy, Spain, Japan, and...

.