This is a website that will generate TAGS for you from your text. Often you will writre a post or a wiki entry andnthen try an work out what are suitable tags for this page. This is a tool that will help you out.
This site is licience under creative commons for non commercial work. Nice!
“TagCrowd is a web application for visualizing word frequencies in any user-supplied text by creating what is popularly known as a tag cloud or text cloud.”