I'm glad to introduce to you a brand-new application, Tagxedo, now in beta!
Tagxedo turns words -- famous speeches, news articles, slogans and themes, even your love letters -- into a visually stunning tag cloud, words individually sized appropriately to highlight the frequencies of occurence within the body of text.
"Welcome to Tagxedo, tag cloud with styles\n\nTagxedo turns words -- famous speeches, news articles, slogans and themes, even your love letters -- into a visually stunning tag cloud, words individually sized appropriately to highlight the frequencies of occurrence within the body of text."