How do I hide my comments and likes in the new news stream on Facebook?

With the new update on Facebook there is the news stream on the right hand side. I don't want everyone to be able to see what I've commented on and what I've been liking all of the time. How do I make it so that I will not appear in any of my friends stream? I just feel it's very intrusive since it comes up with things that I have been saying or liking all of the time.

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia��).