Fribble - 6:42 pm on Aug 8, 2011 (gmt 0)
The links provided in the responses refer to DNS Hijacking - something that has been around for a while.
Engine's post refers to the hijacking of actual SEARCH queries meant for the SE's. This is a whole different animal. I'm surprised that the leaders of these companies think it's ok to do this.
List of ISPs that are redirecting some search queries
Wide Open West
Charter and Iowa Telecom were observed to be redirecting search terms, but have since ceased doing so. Iowa Telecom stopped its redirection between July and September 2010, and Charter stopped in March 2011.