I've just found a wonderful free tool called Wordle. It's a really useful tool to help teachers or students create word clouds based upon the frequency that the words appear in any give text. You can just paste in the text or the URL of a webpage and it generate the word cloud. They look really nice too.

I created a video tutorial which shows how to use it if you want to have a look.

http://www.youtube.com/watch?v=oOzuKXaYCSc

Best

Nik Peachey | Learning Technology Consultant, Writer, Trainer
http://nikpeachey.blogspot.com/
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