Facebook gets A TON of traffic from displaying user profiles in search engines. Not all of your profile is displayed though. Currently the information displayed in the search profile is limited to: your profile picture, a list of your friends, a link to add you as a friend, a link to send you a message, and a list of up to approximately 20 fan pages that you are a member of.
For some people, being displayed in the search engines is a great way to let people get in contact with you, especially if you don’t have an existing website. Facebook also tends to rank high in the search results, so if you want to be easy to find, making your search profile can be a great idea. Many people don’t want any of their information to be public though.
By visiting the same search privacy settings page listed in the previous step, you can control the visibility of your public search listing which is visible to Google and other search engines. You can turn off your public search listing by simply unchecking the box next to the phrase “Create a public search listing for me and submit it for search engine indexing”