You use del.icio.us bookmarks to save all your favorite links at one place and put tags to describe each of these web pages. Jaxly does the reverse - it helps you discover fresh stories on the web based on your del.icio.us tags.
Wordle is the best tag cloud generators on the web. It even lets you change fonts, color schemes and text orientation. With Wordle, you can either create a tag cloud using any del.icio.us user name or copy-paste any block of text of unlimited length.