Is there anyway someone can possible know who's looking at their facebook page and how often?

[Andy G]

Absolutely not, not ever, impossible. A few applications have been set up to say they can do this but it's just not possible as all of the images, code and scripts are served by facebook and no third party website can see who is seeing any page. It is possible to make an application that tell you which of your friends has used the same application but only if you invited them in the first place.

All these applications that say they can do this are just lying, invariably they want you to add all your friends so their application will get more users who will then be bombarded with marketing or other money making devices.

A personal rule of thumb is if any application or group etc asks me to suggest, add or recruit friends before I've been able to evaluate the application, I don't bother investigating any further and delete the application.