Does this Facebook application really work?

A couple of weeks ago, I saw some friends join a group that allowed them to see who viewed their photos when they entered the link in the group description. I think it's gone now, but I was wondering if that application really did work? Cause I'm pretty sure that that violates the rules.Does this Facebook application really work?
I am almost 100% certain when I say it doesn't work. The only way I can imagine it working is if both parties involved have the application installed, and even then I'd consider it unlikely.


I find it very unlikely that by simply joining a group you get access to that information.Does this Facebook application really work?
those groups that say, ';join so you can see who views your profile and pictures'; are a lie.