TagCloud: manage and publish your folksonomies
TagCloud seems to be VERY promising and fun:
TagCloud is an automated Folksonomy tool. Essentially, TagCloud searches any number of RSS feed 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 let’s you publish them on your own website.
I want to test it!