Collaboration has never been this easy. Parallel word processing helps you produce text faster and use feedback better. To see TextFlow in action, watch the 1 minute video presentation and don't forget to sign up for the beta.
Wordle is a neat application that allows you to paste text in and it will create a tag cloud formation with the most used words appearing larger than others.
I make WORDLES to determine if I'm really using the words that belong to the main idea or topic of the blog post. You can do this with your students or use it yourself to improve writing.