Facebook have store millions of passwords in plain text!!!!!

Jespah's link explained it adequately enough thank you.

I wonder that myself but there seem no way of knowing.

I don't use Facebook. But there was once Hiroshima/Nagasaki discussion that I wanted to participate in, and you could only comment using Facebook. I created a dummy Facebook account just for that conversation and then abandoned it.

Since the blackmailer hit me too with a password that I don't remember, perhaps it was the password that I created for my throwaway Facebook account.

One way of knowing if the breech came from Facebook would be if lots and lots of Facebook users report receiving such blackmail emails.

They are store in encrypt text