Generate Tag Clouds

Tag clouds are a great way to introduce a new topic or new terminology in your classes. I've used Wordle and Tagxedo, but Tagul is interesting because it builds interactive tag clouds.
3 Web-Based Tools that Generate Awesome Tag Clouds:

This post is meant not only to show you the tools that will build an awesome tag cloud for you but also to inspire you and share various creative ways to use those tools.