Shampoo is an open-source project, so everybody is invited to contribute to it.
I am happy to see any feedback, problem reports, ideas and suggestions regarding Shampoo:
If you want to participate in the Shampoo development, you can find the most recent sources here:
http://github.com/dmatveev/shampoo-emacs
http://github.com/dmatveev/shampoo
http://www.squeaksource.com/Shampoo.html