Text from famous speeches and writings can be displayed in a cloud to reveal keywords and themes.Brainstormed ideas from the class can be collected to see which ideas rise to the top.
Students can analyze their own writing to see which words they use often (perhaps too often).This can be a great tool for many classroom activities: You input are large passage of text, and then a shape is created from the words, with the more frequent words displayed in a bigger font size, and the less frequent words shown smaller. Word Clouds are a favorite tech tool for classrooms.