The tool at the left combines together words you supply to create new, similar words automatically. It does this by analyzing provided source text using statistics and recombining letters from the source to come up with an altogether new word.
Try copying and pasting text from pages you find on the web. Everytime you click 'Generate' a new word will come out. Text that contains similar sounding words or words that are spelled in similar ways tend to work well. The more text you enter, the more unique the result will be.
If you're at all interested in the technical wizardy thats at work here, you can read the quick write up that I did.