Many adults dont have common sense about things...I am sure you as an adult have made your share of mistakes. Have you ever sped? Common sense and safety tell you not to but many do it anyway.
The Internet and social media is hard on the older folks, I know at 46 I dont get some of it but I have a great kid who is always willing to show me stuff.
And without examples whose to say if what she posted was really crossing the line and exposed yourself to unsafe conditions or you are overreacting.
Some people overshare, I am one of those people and it drives my DH crazy, so I find a balance in life but it is also not fair to have him tell me not to be me.
Once again, try talking to her about it and why it is unsafe or if she is just one of those people than now you know and you refrain from telling her things...your choice. But I think she would just tell people things no matter what form so you should probably refrain from sharing.
I absolutely agree with you - We've all (myself included) made mistakes and done things totally lacking in common sense. With my MIL, the situation isn't helped by the fact that she doesn't respect boundaries in general and has a tendency to treat everyone (not just DH and me) as though they exist to provide Facebook content. We aren't the only ones who've had issues with things MIL has posted on Facebook.
Here's the specific incident that started this rant: DH and I are in the process of selling our current home and purchasing a new home. We've got contracts pending on both houses, but as you know, things can still go horribly wrong. Over the weekend, DH wanted to show them the new house. While there, she started taking pictures (not unusual - she does that everywhere), but she was specifically asked not to share the news on Facebook until everything was final. Not only did a picture of the house appear on Facebook that night, she also included the location and promised (via the comments on her post) to post interior pictures of all the rooms when it was finished. If she had only posted a pic of the house, I would've been irritated that she hadn't respected our request, but I could've lived with it. I'll never be okay with her sharing the other information.
My husband travels frequently for work, so I'm often home by myself. I know our address can be Googled, but I don't necessarily want it served up on a silver platter on Facebook. And I'm certainly not okay with anyone posting what would basically be a virtual tour of our personal space (unless it's a Realtor trying to sell the house). Providing a bunch of strangers with the location and a layout of our house (via the interior pictures she promised to post) is way too much information for my comfort. If we don't invite you into our home, I don't want you to know what our bedroom or the bathroom looks like or where it's located in the house.
I work in a security related field and am generally a closed off type person so I share VERY little on facebook. Like I can't remember the last time I posted something.
My husband however likes to "check in" EVERYWHERE we go. Like if we go to a movie, out to dinner, etc etc. I hate it. Yes I know your facebook is only set to friends but you still have sketchy friends from high school you haven't seen for 10 years, your family that you have told me horror stories about them stealing from you, etc.
Also I see an AWFUL lot of posts from friends of my friends (I have a few cousins that post everything and many of their friends do too) maybe they all have bad privacy settings but even if they do if our friends were to repost things I know they would all see it. At least he doesn't have our address on his facebook.
I hate the checking in. My MIL doesn't know how to go anywhere without checking in and tagging everyone who's with her. When we took MIL and FIL to Disney with us last year, the checking in and tagging was constant (at the hotel, at restaurants, every ride, etc.), even after explaining we don't like to advertise when we're on vacation and our house is standing empty. We both made sure our privacy settings were as tight as possible and didn't approve the tagged items to appear on our own timelines, but it was still so irritating that she did it even after being asked not to more than once. How hard could it have been to just not include us in her tagging spree?