That check in thing makes me laugh, I told my wife she can put as much info/picks as she wants about where were going and what were doing ONCE WE GET HOME.
Also warned her not to go telling the world when I was away for work, cant be to careful these days. Even if she does only have people she knows personally as friends. Even with security settings if a friend comments or likes, their friends (unknown to you) can see it.
I used to organize a lot of forum trips which were organized long in advance so any members would know I was out for the day. For this reason I made sure I never met random members at my house before trips and the few times I sold bits and pieces I would try and do it from work.
Anyone that has ever seen any of my pics will know that I go to great lenghs and block out rego's on all cars including other forum members, whether they care or not.