I have added the Topicala (www.topicala.com/) application in to Facebook (www.facebook.com).
If you add this application you will be able to search the Internet with directly leaving Facebook.
The application can be found at http://apps.facebook.com/topicala/
The application was really simple to develop and doesn't require that you pass any personal details to Topicala.
Let me know what you think. I appreciate all feedback.