Las Vegas – Pubcon 2012, Matt Cutts announces the link disavow tool:
https://www.google.com/webmasters/tools/disavow-links-main
It is a chainsaw of a tool and is not recommended in many cases. This works by uploading a text file within webmaster tools. Line by line, you can add links that you want to disavow. You can also disavow links that are domain wide by using domain:www.domain.com.
Here’s an example:
# Contacted owner of spamdomain1.com on 7/1/2012 to
# ask for link removal but got no response
domain:spamdomain1.com
# Owner of spamdomain2.com removed most links, but missed these
http://www.spamdomain2.com/contentA.html
http://www.spamdomain2.com/contentB.html
http://www.spamdomain2.com/contentC.html
http://www.spamdomain2.com/contentD.html
You essentially cannot negatively hurt a site by disavowing it. It is 99% like a nofollow.
The official video from Google:
The official help section for disavow can be found here.
Matt opened his presentation with a picture of him getting kicked in the balls by a certain someone:

Okay, not really…

We’ll have a video up soon of the luncheon talk with Matt.

Home
About Us
Contact


{ 1 comment… read it below or add one }
Jerry, was there someone sitting behind you that we can’t see?