Is talking about your sex life on Facebook for everyone to see appropriate or am I being a prude?

No, it is not appropriate. Good chance nobody cares and the people who do are not thrilled to be discussing it on Facebook.

Yes, you are a prude. Who wouldn't want to read about sex on someone's wall?

Yes, you are a prude and if you don't like it, you don't have to read it.

No, it's not appropriate because you can't filter the status updates of friends and thus, cannot avoid reading about it even if you want to.

I can't believe you created a poll for this.