The anonymous blog Facebook Secrets, that posted Facebook source code not once, but twice, has been shut down, either by author or by Google. But one would have to assume it was by Google since the anonymous author had no method of contact on the blog, so Facebook was probably unable to send a cease and desist letter. This may have forced Facebook to do things the long way and go through Google to have the blog shut down, but this is unconfirmed.
This little battle between Facebook and Facebook Secrets does little to nothing in preventing the source code from being distributed further, as it has surely been saved and redistributed by many others. It does, however, prove a point, or rather a possibility: a simple blog that no one had heard of before this (it didn’t exist) was able to cause some pretty heavy embarrassment to a site that nearly everyone has heard of.
NEW: TechCrunch posts that a blog called Facebook Secrets Again has been created in regard to the shut down blog Facebook Secrets. The new blog shows the emails (DCMA Notices) from The Blogger Team, first requesting that the infringing content be taken down, then saying that they (The Blogger Team) took the content down themselves. This confirms that Google did indeed take the blog down.