Computer tool to fight splogs

Do any of my computer savvy readers know of an online tool that can scan links on a website to see if they still work? Even better, something that scans to see if links have changed into a splog or spam blog?

I got the idea for this tool when I noticed that in my archives I had a link to iamnotafraid.ca from Warren Kinsella’s past, and it has been co-opted by a spammer looking to benefit from the Google Page Rank that comes from many blogs linking to it.