How to change y answers to private?

[Razorflame (US)]

Hover over the button on the top called "My Activity" and and click on the "Edit my preferences"

Once there, click on "Privacy and Communications".

On that page, under "Sharing and Network", click the box next to both "Share my Q&A" and "Share my Answers network with" and change it to "My Contacts Only".

This will make it so that only people that you have as contacts here on Y!A will be able to see your questions and answers on here.

Hope this helps