Facebook Privacy: Edit What Applications Can Share

A picture says 1,000 words, to secure your private information from applications and websites (spelled wrong) go ahead and make the following changes.

Start by going to Facebook and then hover over 'Account' and 'Privacy Settings'.  The click on 'Edit Settings' next to 'What your friends can share about you'.

My recommendation, make your page look like this image.  Don't let third-party applications know anything about your private information.