Robert_Charlton - 6:29 am on Jun 30, 2010 (gmt 0)
They have gone to Google's adwords ads at the top of the search results I think.
This aspect of the question, as well as questions regarding what might be siphoning off traffic from apparently high ranking sites, has been kicked around for a while on this thread....
SERPS UP but traffic down
It's a discussion that's worth checking out. I'm thinking the question here might be different.
Sgt - Just to clarify... If I'm understanding the directing of your post, are you thinking that personalization might be affecting organic results for affiliate sites? What kind of demographic factors might be involved?