Things aren't always as they appear
If you recently played the “Most Used Words” wordcloud Facebook app you may have opened yourself up to a privacy nightmare. The “game” created by a company called Vonvon.me, requires users to give up almost every private detail about themselves.
If you played this game, there is no way to reclaim the information that may have been harvested. But you can remove it from your system to keep it from accessing anything in the future. To remove the game go to Facebook Settings. Then click on apps on the left side of the screen. If the app is loaded on your system you'll see vonvon in the list of apps. If you're curious about the rights you gave the app, click on the edit icon. To remove the app, click on the X.
For more detailed information click here .