2013 update: note, this may no longer work. I am keeping the post, but you may want to look for a more current blog posting on this topic.
You might not be able to tell from this title, Silicon Valley Users Guide: How to avoid being a Facebook shill like VC David Sze but this article tells you how to modify your facebook settings to turn off annoying ads.
Don’t worry, most people won’t. And even if they did, well don’t worry: coming up with new ways to direct advertisements to you keeps marketing folks in work.
Smart People I Know 
This is terrible and a hard website to follow
Hello, I check your blogs on a regular basis.
Your humoristic style is witty, keep doing what
you’re doing!
I believe that this option is outdated!!!!
It did not work for me !!!!!
Possibly it is outdated. It is a very old post, and Facebook is constantly changing how it works. I will update the post.