Update: In December 2009, Facebook changed its privacy settings, and CEO Mark Zuckerberg became a whole lot less private.

FORBES: How much privacy does the Facebook executive team have?

Last night, I discovered that Facebook CEO Mark Zuckerberg had dramatically decreased the privacy settings for his Facebook profile.

FORBES: Facebook CEO says he made his settings less private on purpose

Facebook chief executive Mark Zuckerberg unveiled new, simpler privacy settings for the social network on Wednesday, at a press conference and on his blog.

FORBES: Facebook's New Privacy Settings: Could Still Be More Private

There was a time when Mark Zuckerberg kept his profile tightly locked down, with the privacy settings so high that all most users could see was his profile photo and a list of his friends.

FORBES: Mark Zuckerberg is Officially 'In a Relationship'

Mark Zuckerberg may be regretting his decision to keep his Facebook profile privacy settings so low.

FORBES: Connect

"The take-home message for me is that, in clinical settings, wearing a mask or an N95 appears to be essentially equivalent, " says Mark E.

CNN: STORY HIGHLIGHTS