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.
TagCloud lets you create and manage clouds with content you are interested in, and lets you publish them on your own website.
My tag cloud, so far: WebScrapbook