I made something like myself when I was in university. They had us upload HTML resumes for internship applications, so I included a link to a fake CSS file (they stripped out images, but not CSS) which was actually a Perl CGI script on my server that did a reverse DNS on the visitor's IP address and then email that to me.
It was interesting to see that some of my job applications were never even considered, and some of them were viewed more than once.
