that doesn't look like the same facebook message i got. the message i got asked if i wanted to provide a phone number in case i couldn't access my account so they could send a new password to my phone as an optional way to log back in. but that was just an option and the message allowed me to not opt for that option. so i selected not to provide it and continued facebooking without giving any personal info. my email address dedicated to mary is the only info they have that i know about