
Hi Christine,
There are many of these about on FB, they are in the main 'applications' and not part of the Facebook official 'toolbox' (for want of a better word) Some of the applications are harmless they don't really show you everyone that has looked at your profile and when, they act more as a 'counter' and just tell you who has viewed and posted on your wall the most.
The other types are scams to generate lots of hits and encourage you 'recruit' more people by ensuring you publish to tell your friends.
All in all, there is not yet an 'app' that simply tells you who has looked at you and when.
The
Facebook security page is a good point of reference, it highlights scams and gives good info on hoaxes etc....
When ever I get those scaremongery messages and profiles from friends, you know the "Be careful there is a spy ware in your account, go to applications and delete...Beware facebook is giving out your location.. blah blah blah" <- 9 times out of 10 when I check this out on the facebook security page I find it confirms a scaremonger hoax and explains what is what.
Now.... on to more serious matters: When are you going to join Farmville!!!!!?????? :-D