OT question about facebook privacy settings

[smacky1]

I posted this on the community thread, but Im hoping someone here may have the answer for me: Before facebook changed their page setup, I had my privacy set so that if I posted something on someone else's wall, it didnt appear in everyone's newsfeed. Now, I cant figure out how to get that part back. If I post on my friend Ambers wall, everyone that has her for a friend and myself as a friend gets what I wrote on their feed. Im not a fan of that. How can I change it? I dont mind if people go to her page and see it, I just dont want it to appear in everyones feed.