Matt Cutts tells about Google's link disavow tool. You probably shouldn't use it, but it's super exciting.

1. Google’s Link Disavow Tool

2. New Tool!

4. Tell Google which links
to your site you’d like to
ignore.

6. Clean up your back
links.

8. Paid Links? I know you
wouldn’t do it. But maybe
some dirty SEO has…

10. Blog spam, comment
spam, forum spam, guest
post spam, low-quality
article syndication…

12. First, get those links
actually removed from
the web…

14. Next, guess which links
you should disavow…

16. Remember, you probably
don’t need to use this
tool.

17. Only if you’ve got an
unnatural link
warning from us…

18. Ignore the porn.

19. We treat a link disavow
request as a very strong
suggestion… It’s like a
nofollow…

20. Don’t hold your breath,
we expect it to take
weeks for links to be
disavowed.

21. Remember, you
probably don’t need
to use this…

22. Have I mentioned that
most people should not
need to use this?

23. Don’t shoot
yourself in the
foot…

25. Only disavow ones that,
according to recent “stuff,”
look spammy…

27. But I know you won’t listen…

28. This is probably not something you
should be using…

29. But we’re super
excited about this
tool. Just don’t use it.

30. Thanks for showing us
about this Bing…