Mark Zuckerberg |
A Facebook spokesperson :
"This error isn't specific to any one account. It's generated when a person has been blocked a certain large number of times. In very rare instances, a viral campaign will develop instructing lots of people to all wrongly block the same person. The purpose of this system is to protect the experience for people targeted by these campaigns. We're constantly working to improve our systems and are taking a closer look at this one."
If you Have an account on facebook, you probably blocked same people from watching your profile and from seeing your name on facebook search. Zuckerberg has also an account on his own site
http://www.facebook.com/zuck .
As you can see his wall is empty . you can't add him as friend and you can't poke him but you can send message.
Now let's try to block Mark .
when you click on report/block and check block and submit your request .here is the result
Block Failed
If you block someone, they will not be able to find you in a Facebook search, see your profile, or interact with you through Facebook channels (such as Wall posts, Poke, etc.). Any Facebook ties you currently have with a person you block will be broken (for example, friendship connections, Relationship Status, etc.). Note that blocking someone may not prevent all communications and interactions in third-party applications, and does not extend to elsewhere on the Internet.
One can only imagine that even if you could block "Zuck", he'd be able to get around this if he wanted. Then there's the fact that its his site. Would you want people who have accounts on your site to be able to block you?