There are freegames that do point users to the casino.. there is a button on the freegame to “Play for real money now” ..
Honestly though, I have a forum, and blogs and a lil member shout box on my site.. I try to make it more of a community.. somewhere that members want to go everyday just to see what’s new! So I wouldn’t see any problem at all with absolutely free games! If it makes them want to come and play, I’m game 
I like them to have fun, and feel like its a group they “belong” to! That is afterall why I started it in the first place, long b4 I ever thought it could make me some cash as well 
I am a gambler at heart I’m game for a quick game of pacman every now n then, but that just doesn’t make your heart beat like a hot game of poker! Pacman passes the time.. but I’ll find my way to real games