Iaibear, you can control exactly which information (picture, college you attended, age, etc.) is available to whom ("friends only", "friends + friends of friends", "everyone", "my coworkers", "those guys from FA.com", "that group I saw fit to create", etc.) in the "privacy settings" of your account. The default settings are not very restrictive, which is the main beef I hold with FB; fortunately you can easily remedy to that.