See who looks at your profile/how many times has your profile been viewed?

There has been a scam around lately where supposedly if you added an app it would let you view who looks at your Facebook profile.

Some apps even claim if you add their app you can see how many times your profile has been viewed.

These are complete scams. The only people who could tell you that information is Facebook. Why? because the code required to count as well as see who's looking at your profile, has to be on your profile since it's creation. That code is not there. Before Facebook revamped their profile pages again you used to see thousands of apps with crap all over your page. Those apps still could not identify which friends visited your page, they could however count how many page visits you got, they were incredibly inaccurate though. Facebook no longer has that same system though. No apps can count how many friends view your profile or which ones are doing it.

These scams are usually survey scams and are viral, they tend to post messages to your wall without you knowing.