Every month; an email from the list owner is sent to remind one that they belong to the list "X" and how to unsubscribe.
Also, at the bottom of each skunkworks mail; we have this link:
http://lists.my.co.ke/cgi-bin/mailman/listinfo/skunkworks
And if you click on it; and scroll down; you will see where to put in your "email" to unsubscribe.