To get a feel for the size of the job - there are 1580 websites that link to the bad site... some of them are reasonably high traffic and count a good bit to google but many are low traffic.
Here is the list if you want to compare, a concerted effort by conservative bloggers should be able to do this, if there is interest. But the campaign needs to stealthy since there are thousands of liberal and/or "humor" sites that might join in if it becomes a public fight.
http://www.google.com/search?as_lq=http%3A%2F%2Fwww.spreadingsantorum.com%2F&btnG=SearchI know it is a massive job, but every bit does help, if a lot of people here do it, and they pass it on to others maybe we could get the critical mass we need to.