I think what he's showing us is that one site (a crack site) is having people solve the MYSPACE captcha in order to download a file.
There is a term for this though i can't recall it at the moment.
Basically you are tricking unwitting humans into doing an automated solution of a captcha on another site, by making them think they are solving a captcha to get something on a different site.
(That's why myspace put a watermark on their captcha image, to warn people).