Facebook helps you connect and share with the people in your life.
If you want to prevent and secure yours privacy settings then you ought to disable Facebook chat while you are logging into it as in case you secure all yours privacy settings but still through Facebook chat system any friend can connect with you easily. So, here is the tip which in face very easy to use and yours privacy can be secured completely.
While searching on this subject relentlessly on Google I came across one of my favourite site Digital Inspiration (http://www.labnol.org/) which gives a very easy tip how to do it, in true sense of mind Facebook chat cannot be disabled but it can show to yours firneds as you are offline that is all and can prevent or show to yours friends that you are offline while still you are accessing yours Facebook account. Is it not that wonderful.
Log in to yours Facebook account .Click the chat icon in the lower right corner of your Facebook page and select option and then from the pop up menu click ‘Go Offline’ then wait ofr a few seconds and tyours Facebook chat will show “Chat offline” , that is it and you are done .Refer this VDO tutorial to know more. The VDO tutorial is at the bottom of this article.