what are tag Clouds?

[mint1]

any one here who can precisely explain the use of tag clouds??
how can i build them?

 

[temi]

Tag cloud used to be popular a few years ago, they are history now.

 

[gkumar]

A tag cloud or word cloud (or weighted list in visual design) is a visual depiction of user-generated tags, or simply the word content of a site, used typically to describe the content of web sites. Tags are usually single words and are typically listed alphabetically, and the importance of a tag is shown with font size or color.[1] Thus both finding a tag by alphabet and by popularity is possible.

 

[Atif3]

So I'm going to analyse some of the more well-known tag clouds on the ... Unfortunately, that is one of the worst examples of tag cloud markup