I am friends with someone on FB that is a member of the DB group and the DB page and I can see that information on FB. You could probably limit who can see that information using privacy settings but by default if someone is "friends" with you then they can see that information.
I don't want to take the chance of joining the group or the page and my W seeing it. That might just be me but that is the stance that I continue to hold.
M 33 | W 34 | Kids: S4, S3 M: 5/28/05 Bomb: 8/22/09 EA: 8/1/09 | PA 12/26/09 W L: 10/21/09 M L: 11/16/09 | 12/09 to file SA W & Boys Move Out: 3/14/10