Tag Cloud本質上就是熱門標籤集合的可視化工具。用字體大小表示標籤的重要性，按字母順序或其他順序排列標籤，或者再結合顏色深淺這些表示時間先後，呈現出來供用戶瀏覽或者檢索用的小工具。
WIKI http://en.wikipedia.org/wiki/Tag_cloud. （概念，發展，類型）
個人博客 http://blog.sina.com.cn/s /blog_56b798f801009rrb.html . （創建標籤雲的實例）
Deeper Web http://www.deeperweb.com/ （Google Beta版標籤雲）
學位論文 Mogens Nielsen. Functionality in a second generation tag cloud[D]. Department of Computer Science and Media Technology, Gjøvik University College, 2007. （很全很詳細，關於第一代標籤與和第二代標籤雲）
期刊論文
Improving Tag-Clouds as Visual Information Retrieval Interfaces
Automated tag clustering: Improving search and exploration in the tag space.
Web information retrieval in collaborative tagging systems.
Improved annotation of the blogosphere via autotagging and hierarchical clustering..
Towards effective browsing of large scale social annotations.
Clouds for Summarizing Web Search Results.
Discovering trends in software engineering with google trend.
Generating summary keywords for emails using topics.
Data Clouds: Summarizing Keyword Search Results over Structured Data.
在線生成靜態Tag Cloud的工具：
TagCrowd http://www.tagcrowd.com/
Tag Cloud Generator http://www.tagcloud-generator.com/
tagCloud.de http://www.tag-cloud.de/
動態Tag Cloud插件： http://blog.yangyc.com/2008/10/19/a-new-dynamic-tag-cloud/
Tagline開源生成工具：
Tagline Generator http://chir.ag/projects/tagline/
Taglines：一條流過記憶的河 http://ysearchblog.cn/2006/07/taglines.html