For example, you post someone's photo on BBS and ask others to get all kinds of information related to him, like his home address, cellphone number and education background. This is called "人肉搜索". It is cruel for the person who becomes the target.

web definition from Google below as manpower search engine 人肉搜索，是一种以互联网为媒介，部分基于用人工方式对搜索引擎所提供信息逐个辨别真伪，部分又基于通过匿名知情人提供数据的方式搜集信息，以查找人物或者事件真相的群众运动。人肉搜索有时也造就了网络爆红现象。 You can image it a search aim at somebody, a specific person, with help of amounts of netizen, the man behind end computer. Such search commonly reveals targets' private information, such as address,telephone number, working or studying places,etc. Like a double-edge sword, it is seemingly immortality but benefits people sometimes, like exposing bad.

"Cyber hunting" is a term used to describe Internet users who hunt down otherwise-anonymous Chinese citizens in cases ranging from love triangles to political scandals and cold-case murders. http://www.china.org.cn/china/news/2009-01/19/content_17153841.htm

找到他的真实姓名，住所及家人之类的生活上面的隐私。

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