Profile Counter is a Facebook application that adds a button on your profile. With this button, visitors who browse your profile can choose to let you know that they've been there.
The application gives you an overview of who has visited your profile. It also has lists of the most popular profiles and the busiest profile visitors.
Users can customize their Thank you message which will be shown to their visitors who have clicked the button to be counted.
Add the Profile Counter application to your Facebook profile.