I have attempted a contact of Mr. Kipphut via email requesting that he voluntarily remove the materials.
If not, I have written a proposed notification to 1&1's legal counsel about the infringement:
http://www.projectaon.org/staff/jonathan/copyright-complaint-20060614.pdf
If everyone could take a look (especially if you are a lawyer) or have a lawyer (or even a soon-to-be lawyer) friend take a look, that would be great. I may be able to get this sent on an attorney's letterhead, but I'm not sure about that.
-- Jon