Hi there,
I've taken a quick peek at your site too - very nicely done, layout is clean
one of the things I would point out from a player perspective is that you don't want to be telling them the person who's paid you the highest tennancy fee "sponsor of the month" - as then you are potentially loosing the user's trust - in terms of recommending top casino's they should consider playing with.
I'd also recommend putting the Casino reviews in the navigation bar at the top - if I'm a player looking for a place to play and hit your site, I need to be assured of why you are recommending me to these particular casinos. Maybe do a quick comparison table or something to help make the decision.
A lot of your placements are "below the fold" and you may want to change the layout a bit to get the top performing ad slots - take a look at this diagram which shows common eye tracking that occurs on websites - this should help you with defining layout to optimise conversions.
http://www.useit.com/eyetracking/
Hope you find these tit bits useful, I'm certainly happy to help you if you want to chat about this some more. (We're always looking for new people to work with!

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Best of luck with the journey - I'm sure you will make the site a fantastic success!