graeme_p - 7:12 am on Sep 17, 2010 (gmt 0)
you can "unknowingly" have a profile on FB
I ave never seen such a form on FB. The only thing I can see that I can do that would intrude on other's privacy is tag them in photos.
I use FB but I never assume it is private. If I put stuff on there, rather than on by blog, for example, it is because it is only of interest to my friends.