Most girls don't work with this trick. Especially some of the more recent camgirls I believe. I don't know exactly how this website worked but it seems like most of the captures came from 2013.
I figured out what it is, the girls save their cam shows to be sold on the website, which are available to be viewed with this link. So it comes down to, do the girls have products for sale on the website, if they do you can see them here.