The social-networking site has quietly replaced your default email addresses such as Gmail and Yahoo! with your @Facebook.com address, an email service option the company launched a few years ago and synced with Timeline in April.
I went into my profile and verified this report and sure enough my contact address has been changed. Do me, and yourself a favour, DO NOT attempt to contact me through this address.
I already have PRIVACY CONCERNS with Facebook and this intrusion without my permission or prior knowledge is deeply troubling.
What to do:
I went in to my profile scrolled down and checked to see if the address had been changed, both the old and new address is there.
I then clicked on EDIT
Then I went to the far left of my prefered email address and clicked on the icon it opens and shows not shown on time line so I clicked it to shown on time line.
I then went to the new email and clicked on NOT shown on time line.
Make sure to scroll to the bottom and save