NichedPorn

I've been looking at some ST sites and a lot of them host galleries on the same domains. Something like this is not possible with the script, so I am wondering what would be the best software to do it. I would be talking about something like this:

teenport[dot]com -> ST on the front
teenport[dot]com/galleries/nubiles/sasha-p/too-cute-for-words/ -> how would I make something like this (some kind of good php cms would be probably the best?) / how did they do it?

Thanks.