Ben Edelman, the individual who brought the whole WhenU's case to light, has posted a very interesting comment at this site. He said:
A few people have asked me which SEO WhenU used. After all, it would seem to be perfectly natural for WhenU to name the SEO, and to let the SEO confirm WhenU's statement of what happened here. But all the news coverage to date is silent as to which SEO did the work -- even news publications that directly interviewed WhenU's Avi Naider on this subject.
So, this seemed like a subject ripe for some technical examination. I've taken a look, examing IP sharing and HTTP responses. All signs point to Synergy6. See my new addition to the site:
Which SEO Did WhenU Use? The Best Inference: Synergy6 http://www.benedelman.org/spyware/whenu-spam/seo.html
Ben Edelman benedelman.org
Thank you Ben for sharing this information.