When I first started out (way back in October of last year), all I did was PPC traffic sent straight to casinos. I developed some of my own portals, simple as they might be, in large part because of conversations I read here from bb1webs and dominique.
But I feel like I did sometimes see better conversions sending people straight to the casino. Not sure if there’s a reason why, other than people who are on a portal might do a little more shopping.