You have probably seen examples of word clouds created in Wordle where a piece of text is entered and then a word cloud is created where word size is proportional to its frequency in the text.  Tagxedo has a similar function but provides more customization.  For example, one could choose from several different built-in shapes or even upload their own image to have there word cloud in that shape.  Look below and see my first try at Tagxedo where I used an image of myself (although one would never know it was me.)  You can also customized the color scheme and simply use text from a website by entering the url of the page, or one could even type directly in a text box and the word cloud would be created using that text.

Tagxedo