TagCloud is a service that can create a weighted list of tags (or
tag cloud) based on an RSS feed. You can then add this list to your Web
TagCloud is an automated Folksonomy tool. Essentially,
TagCloud searches any number of RSS feeds you specify, extracts
keywords from the content and lists them according to prevalence within
the RSS feeds. Clicking on the tag's link will display a list of all
the article abstracts associated with that keyword.