[andrewmunn]

If you don't want friends of friends seeing stuff, why don't you just set your privacy to friend's only?

[Irregardless]

You can't control your friends' privacy settings. If they tag you in something and have their own privacy settings wide open, anyone will be able to see it.

[bulltale]

From what I recall you can stop friends from tagging you in photos on FB.

[Leynos]

You can make tag approval mandatory, but people can still tag you and you will be bombarded with spam about that tag until you remove it.

[bunkat]

This doesn't actually help since your friends control a lot of your privacy. Remember when Mark's sister's photo ended up on Twitter? She had her privacy set to friend's only... It also doesn't prevent friends from tagging you in photos or signing you in places.

[businessleads]

She tagged her sister and her sister's friend tweeted it. Not the same.