I have had quite a few of them too. The thing is they keep getting new domain names, and them discarding the domain. So in a couple of weeks time the below sites will no longer work
I have
http://calisen.com/casino/
http://bergofm.com/casino/
http://tougomi.com/casino/
The only ones I could find for the moment, but they don't work any more, so I would advise taking a hard copy of the html and pictures if you report them, as by the time they look into it, the site will no longer be there