According an article at nikkasystems.com Facebook has done it again!
The normal way to verify an e-mail address is to get a mail with either a link or a code to your inbox. By clicking on the link in the mail or by copy-paste the code you could have your e-mail address verified.
Facebook have had a page where they asked for the password to your e-mail account.
This is, as you might have guessed, a very big no-no!
Do you ever trust Facebook from now on?