As a translator, I have come across Wordle before. Now the latest post on my fiancé's blog reminded me of how useful this tool can be. You can create a stylish word cloud from any text page, preferably one with 1000+ words. It will put the emphasis on the most important words, to give you an idea of what the text is all about.
I tried it out on my blog, and it looks like this: (can you guess what the most important word is? ;)