Revolt-Search(dot)com is a search site that passes its searches through to searchadv.com.
Seems they like to scare people too.
This pushes, through an affiliate link, a download of The Spy Guard, marketed by Klik Software (part of Klik Revenue).
Note that we do not recommend going to this site except in a vmware/virtual PC session.
(Credit to Sunbelt researcher Patrick Jordan)